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2026

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2027

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2028

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Who is travelling?

Who is travelling?

AdultsAges 18 or above

2

ChildrenUnder 18

0
From
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US $2,849 per person

Epic Southeast Asia: River Cruises & Karst Mountains

40 days
From Bangkok to Ko Tao
5.0
14 traveler reviews
From
$3,799
-25%
US $2,849 per person

Price based on Cheapest Room

Price based on Shared Room

Price based on Private Single Room

Price based on Private Double Room

Select Date

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2026

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
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2027

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

2028

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1 Adult2 Adults, 1 Child2 Children

Who is travelling?

AdultsAges 18 or above

2

ChildrenUnder 18

0
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Plan your adventure:
Explorer
Curated to ignite your sense of adventure
Fully Guided
An experienced guide will be with you for the entire tour
Medium Intensity
Travelers should be comfortable with somewhat-demanding activities
Guided in English
Group Size 10 - 18
Ages 18-39
Image of a map showing the route of the tour

Itinerary

  1. Day 1

    Bangkok

    Accommodation
    Hotel (W22 by Burasari Hotel), Hotel (New Siam 2)

    Included Activities

    • Welcome Moment - Meet Your CEO and Group
    • Connect With New Friends
  2. Day 2

    Bangkok to Siem Reap

    Meals
    Breakfast
    Accommodation
    Hotel (Garden Village Siem Reap)

    Optional Activities

    • Phare Circus
  3. Day 3

    Siem Reap

    Meals
    Breakfast, Lunch (Delicious Khmer meal at a restaurant kickstarted by Planeterra non-profit partner, or with a local family)
    Accommodation
    Hotel (Garden Village Siem Reap)

    Included Activities

    • Angkor Wat Guided Tour
    • Local Khmer Meal
    • Big Night Out - Siem Reap
    Landmarks
    Angkor Wat
  4. Day 4

    Siem Reap to Phnom Penh

    Meals
    Breakfast
    Accommodation
    Hotel (Chaktomouk Mongkul Hotel), Hotel (Rose Emerald Hotel)

    Included Activities

    • Orientation With CEO
    Itinerary Image 1
  5. Day 5

    Phnom Penh

    Meals
    Breakfast
    Accommodation
    Hotel (Chaktomouk Mongkul Hotel), Hotel (Rose Emerald Hotel)

    Included Activities

    • Street Food Crawl - Phnom Penh

    Optional Activities

    • Tuol Sleng Prison and Killing Fields visit
    • Silver Pagoda visit
    • Royal Palace visit
  6. Day 6

    Phnom Penh to Koh Rong

    Meals
    Breakfast
    Accommodation
    Resort (Sok San Bay Resort Koh Rong), Hostel (Onederz Hostel Koh Rong)
  7. Day 7

    Koh Rong

    Accommodation
    Resort (Sok San Bay Resort Koh Rong), Hostel (Onederz Hostel Koh Rong)

    Optional Activities

    • Fishing
    • Hiking
    • Kayaking
  8. Day 8

    Koh Rong to Chambok

    Meals
    Dinner (Delicious Cambodian home-cooked meal with local family)
    Accommodation
    Home-stay (Chambok Homestay)

    Included Activities

    • Home Meal
  9. Day 9

    Chambok to Ho Chi Minh City

    Meals
    Breakfast
    Accommodation
    Hostel (Phan Anh Backpackers Hostel)

    Included Activities

    • Border Crossing (Cambodia - Vietnam)

    Optional Activities

    • Rooftop bar visit
    Landmarks
    Ben Thanh Market
  10. Day 10

    Ho Chi Minh City to Nha Trang

    Meals
    Breakfast

    Included Activities

    • Orientation With CEO
  11. Day 11

    Nha Trang

    Accommodation
    Hotel (Bondi Backpackers Nha Trang)

    Included Activities

    • Nha Trang Street Food Crawl

    Optional Activities

    • Local shops exploration
    • Mud bath
    • Beach relaxation
    • Historical site visits
  12. Day 12

    Nha Trang to Da Nang

    Meals
    Breakfast
  13. Day 13

    Da Nang to Hoi An

    Accommodation
    Hostel (Hoi An Paradise Hostel), Hostel (Dolphin Hostel Hoi An)

    Included Activities

    • Hoi An Orientation Walk
    • Reminisce Riverside

    Optional Activities

    • Cooking class
    • Cycling to beach
    • Tailor visit
    • Old town exploration
    Landmarks
    Hoi An Old Town
  14. Day 14

    Hoi An

    Meals
    Breakfast, Lunch
    Accommodation
    Hostel (Hoi An Paradise Hostel), Hostel (Dolphin Hostel Hoi An)

    Included Activities

    • Oodles of Noodles

    Optional Activities

    • My Son visit
    • Thu Bon River cruise
    Landmarks
    My Son
  15. Day 15

    Hoi An to Hué

    Meals
    Breakfast
    Accommodation
    Hostel (DMZ Hostel)

    Optional Activities

    • Royal Citadel visit
    • Tombs visit
    • Perfume River cruise
    • Hue Motorbike Tour
    Landmarks
    Citadel of Hué
    Perfume River
  16. Day 16

    Hué to Phong Nha

    Meals
    Breakfast
    Accommodation
    Hotel (Sai Gon Phong Nha Hotel)
    Landmarks
    Phong Nha-Kẻ Bàng National Park
  17. Day 17

    Phong Nha to Hanoi

    Meals
    Breakfast

    Optional Activities

    • Caving in Phong Nha
  18. Day 18

    Hanoi to Ha Long

    Meals
    Breakfast, Lunch (Seafood lunch on cruise)
    Accommodation
    Hotel (Halong Centrica Hotel)

    Included Activities

    • Hạ Long Bay Junk Boat Trip
    Landmarks
    Hạ Long Bay
  19. Day 19

    Ha Long Bay to Hanoi

    Meals
    Breakfast
    Accommodation
    Hotel (Anise Hotel Hanoi)

    Included Activities

    • Old Quarter Orientation Walk

    Optional Activities

    • Hanoi Foodie Culture Tour
    Landmarks
    Hanoi Old Quarter
  20. Day 20

    Hanoi to Vientiane

    Meals
    Breakfast
    Accommodation
    Hotel (Vientiane Garden Boutique Hotel)
    Landmarks
    That Luang
    Mekong River
  21. Day 21

    Vientiane to Vang Vieng

    Meals
    Breakfast
    Accommodation
    Hotel (Thavisouk Riverside Hotel)

    Included Activities

    • Vang Vieng Guided Hike
    • Vang Vieng Nightlife
    Landmarks
    Song River
  22. Day 22

    Vang Vieng

    Meals
    Breakfast
    Accommodation
    Hotel (Thavisouk Riverside Hotel)

    Optional Activities

    • Bike rental to explore caves
    • Countryside trekking
    • Vang Vieng Adrenaline Bundle
  23. Day 23

    Vang Vieng to Luang Prabang

    Meals
    Breakfast
    Accommodation
    Hotel (Flora by Sanakeo Hotel)

    Included Activities

    • Sunset at Wat Phousi
    • Street Food Crawl
    • Orientation With CEO
    Landmarks
    Wat Phousi
  24. Day 24

    Luang Prabang

    Meals
    Breakfast
    Accommodation
    Hotel (Flora by Sanakeo Hotel)

    Included Activities

    • Kuang Si Waterfalls Excursion
    Landmarks
    Kuang Si Waterfalls
  25. Day 25

    Luang Prabang to Pak Beng

    Meals
    Breakfast, Dinner (Dinner with host family)
    Accommodation
    Home-stay (Ban Huay Thum Homestay)

    Included Activities

    • Mekong River Slow Boat
    • Mekong River Homestay & Traditional Performance
    Landmarks
    Mekong River
  26. Day 26

    Pak Beng to Chiang Khong

    Meals
    Breakfast, Lunch
    Accommodation
    Guesthouse (Namkhong Guesthouse)

    Included Activities

    • Mekong River Slow Boat
    • Border Crossing (Laos - Thailand)
  27. Day 27

    Chiang Khong to Chiang Mai

    Accommodation
    Hotel (Chiang Mai Gate Hotel)

    Optional Activities

    • Doi Suthep visit
    • Cycling
    • Night market shopping
    • Northern Thai Cooking Class
    Landmarks
    Doi Suthep
  28. Day 28

    Chiang Mai

    Accommodation
    Hotel (Chiang Mai Gate Hotel)

    Optional Activities

    • Doi Suthep visit
    • Countryside cycling
  29. Day 29

    Chiang Mai to Ban Mae Jok

    Meals
    Breakfast, Lunch, Dinner

    Included Activities

    • Hilltribe Trek Day 1
  30. Day 30

    Ban Mae Jok to Pa Khao Lam

    Meals
    Breakfast, Lunch, Dinner

    Included Activities

    • Hilltribe Trek Day 2
    Landmarks
    Mae Tang River
  31. Day 31

    Pa Khao Lam to Chiang Mai

    Meals
    Breakfast, Lunch
    Accommodation
    Hotel (Chiang Mai Gate Hotel)

    Included Activities

    • Bamboo Rafting to Lahu Village
    • Lahu Village Visit
    • Bamboo Rafting to Shan Village
    • Chiang Mai Celebration
  32. Day 32

    Chiang Mai to Bangkok

    Meals
    Breakfast

    Optional Activities

    • Market shopping
    • Thai massage
    • Temple exploration
  33. Day 33

    Bangkok

    Accommodation
    Hotel (New Siam 2)
  34. Day 34

    Bangkok to Surat Thani

    Meals
    Breakfast

    Included Activities

    • Street Food Crawl

    Optional Activities

    • Wat Pho visit
    • Grand Palace visit
    • Thai massage
    • Klong boat exploration
    Landmarks
    Wat Pho
    Grand Palace
  35. Day 35

    Surat Thani to Khao Sok

    Meals
    Breakfast, Lunch
    Accommodation
    Resort (Khaosok Rainforest Resort)

    Included Activities

    • Kao Thep Pitak Community-Owned Farm & Meal
    • Lake Cheow Lan Excursion
    Landmarks
    Khao Sok National Park
    Lake Cheow Lan
  36. Day 36

    Khao Sok to Koh Pha Ngan

    Meals
    Breakfast
    Accommodation
    Resort (Mac's Bay Resort), Resort (Delight Resort)
    Landmarks
    Koh Pha Ngan
  37. Day 37

    Koh Pha Ngan

    Accommodation
    Resort (Mac's Bay Resort), Resort (Delight Resort)

    Optional Activities

    • Waterfall exploration
    • Lagoon swimming
    • Hiking
    • Beach relaxation
  38. Day 38

    Koh Pha Ngan to Koh Tao

    Meals
    Lunch
    Accommodation
    Resort (Seashell Resort Koh Tao)

    Included Activities

    • Koh Tao Snorkelling

    Optional Activities

    • Koh Nang Yuan View Point visit
    Landmarks
    Koh Tao
    Koh Nang Yuan
    Itinerary Image 1
  39. Day 39

    Koh Tao

    Meals
    Breakfast
    Accommodation
    Resort (Seashell Resort Koh Tao)

    Included Activities

    • Beach Bar

    Optional Activities

    • Try SCUBA Dive 1 Day Experience (2 dives)
  40. Day 40

    Koh Tao

    Meals
    Breakfast

    Included Activities

    • Departure Day

    Optional Activities

    • Bangkok Express: Koh Tao to Bangkok

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What's Included

Expand All
  • Accommodation
  • Guide
  • Meals
  • Additional Services
  • Transport

What's Not Included

  • Flights
  • Insurance
  • Optional
  • Additional Services

Where You'll Stay

All accommodations are subject to change

Operated by

G Adventures

Platinum Operator
Rating
4.7(12,623 reviews)
Response time
4 hours
Response rate
100%
Cancellation policy

Traveler Reviews

5.0
Overall rating based on 14 Reviews

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  • A
    September 9th, 2025
    I had a very positive experience, I enjoyed the whole trip and would recommend it to everyone who would be interested...
    Show more
    Traveled in July 2025
    Review collected by G Adventures
  • A
    August 25th, 2025
    My overall experience of my first G Adventure tour couldn’t have been any better! It lived up to the expectations...
    Show more
    Traveled in October 2025
    Review collected by G Adventures
  • A
    October 25th, 2025
    Fast paced, exciting and memorable. You got to hit so many highlights in a short period of time. Overall, I wouldnt...
    Show more
    Traveled in August 2025
    Review collected by G Adventures
  • A
    October 20th, 2025
    The people, the places, the activities, the food, all 10/10. Had the time of my life and wish I could do it all over...
    Show more
    Traveled in July 2025
    Review collected by G Adventures
  • A
    October 21st, 2025
    The trip was a unique way to experience as much as possible in that short time - meeting new people and explore the...
    Show more
    Traveled in October 2025
    Review collected by G Adventures
  • A
    May 9th, 2025
    It was an incredible experience that is so hard to put into words. I conquered my fear of water, learnt to love spicy...
    Show more
    Traveled in July 2025
    Review collected by G Adventures
  • A
    August 22nd, 2025
    The trip of a lifetime. I would travel with g adventure again!
    Traveled in July 2025
    Review collected by G Adventures
  • A
    March 11th, 2025
    Fantastic experience with wonderful guides, locations, and activities. It's a pleasure meeting like minded people on...
    Show more
    Traveled in September 2025
    Review collected by G Adventures
  • A
    September 11th, 2025
    Great trip
    Traveled in September 2025
    Review collected by G Adventures
  • A
    October 10th, 2025
    I have absolutely loved my experience and I wouldn’t change the experience for the world. I’ve made friends for life...
    Show more
    Traveled in August 2025
    Review collected by G Adventures

Dates & Availability

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Select Date

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2026

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

2027

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

2028

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1 Adult2 Adults, 1 Child2 Children

Who is travelling?

AdultsAges 18 or above

2

ChildrenUnder 18

0
Upcoming departures
Hurry, deals only available for a limited time!
Ends on 6 May, 2026
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    To Saturday
    11 Jul, 2026
    This departure date is not available or sold out
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  • From Tuesday
    9 Jun, 2026
    To Saturday
    18 Jul, 2026
    This departure date is not available or sold out
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    To Thursday
    30 Jul, 2026
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    30 Jun, 2026
    To Saturday
    8 Aug, 2026
    This departure date is not available or sold out
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    US $3,949 per person
  • From Sunday
    5 Jul, 2026
    To Thursday
    13 Aug, 2026
    This departure date is not available or sold out
    Sold out
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    US $3,949 per person
  • 9 Other Unavailable Departures
  • Instant Confirmation
    -25%
    From Sunday
    12 Jul, 2026
    To Thursday
    20 Aug, 2026
    English
    Filling Fast
    This departure date is available and will 100% depart
    Guaranteed departure
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    $3,949
    US $2,962 per person
  • From Sunday
    19 Jul, 2026
    To Thursday
    27 Aug, 2026
    This departure date is not available or sold out
    Sold out
    From:
    US $3,949 per person
  • Instant Confirmation
    -25%
    From Sunday
    26 Jul, 2026
    To Thursday
    3 Sep, 2026
    English
    Filling Fast
    This departure date is available and will 100% depart
    Guaranteed departure
    From:
    $3,949
    US $2,962 per person
  • Instant Confirmation
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    From Sunday
    23 Aug, 2026
    To Thursday
    1 Oct, 2026
    English
    Filling Fast
    This departure date is available and will 100% depart
    Guaranteed departure
    From:
    $3,799
    US $3,229 per person
  • Instant Confirmation
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    From Sunday
    30 Aug, 2026
    To Thursday
    8 Oct, 2026
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    This departure date is available and will 100% depart
    Guaranteed departure
    From:
    $3,799
    US $3,229 per person
  • Instant Confirmation
    -20%
    From Sunday
    13 Sep, 2026
    To Thursday
    22 Oct, 2026
    English
    This departure date is available and will 100% depart
    Guaranteed departure
    From:
    $3,799
    US $3,039 per person

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What our customers ask about this tour

The content in our FAQ section is subject to change.
All questions
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Try a different search term or ask a question to this adventure's experts
  • S

    Shirley

    Asked on November 3rd, 2025

    i am interested on this tour - traveling solo possible a friend would join, couple questions - either party are both in great condition but age are 52, is there an alternative to this tour in case i am not able to join due to the age - is there additional discount in case i purchase additional tours to prolong my travel? In case i ended up traveling by myself and join a tour would be possible to get pair with someone else so there would not be an additional supplement and is there is someone to help me pair different tours

    Age Range
    Price / Availability
    Single supplement
    Tour Details
    • G AdventuresOperatorWritten November 2025

      Unfortunately, travelers need to be between the ages of 18 and 39 in order to participate in Epic Southeast Asia: River Cruises & Karst Mountains. We would recommend that you look at our Southeast Asia Encompassed tour since it has no age restriction, and it is our longest tour we offer for all ages. If you book 3 or more tours at the same time, you will get a 5% discount on each tour that is not already on sale. Should you and a friend book, you can select each other as roommates. Should they not book with you, and you do not wish to add the single supplement, you will be paired with another solo same-gendered traveler.

  • S

    Susan

    Asked on May 28th, 2025

    Are your age restrictions insurmountable?

    Age Range
    Tour Details
    • G AdventuresOperatorWritten May 2025

      Yes the age restrictions are strict, however there is a similar tour that we offer called the Southeast Asia Encompassed - this is open to all ages.

  • I

    Issaurat

    Asked on March 23rd, 2025

    What are the visa requirements?

    Visa
    • G AdventuresOperatorWritten March 2025

      Visa requirements vary by country. Please check the latest guidelines well in advance of travel.

  • B

    Benjamin

    Asked on March 17th, 2025

    I'm interested In your 40 day tour and I'm wanting to book it. But I'm having trouble with my ear at the moment. My Dr has said it might be better to push back the date I'm interested in. But tbh I'm wanting to go then. I'm wondering if I have to push the date back of that's at all possible.

    Tour Details
    Travel Support
    • G AdventuresOperatorWritten March 2025

      You can amend your tour date up to 31 days before departure, however the new date that you choose will be subject to availability.

  • C

    Cathy

    Asked on January 8th, 2025

    Is the tour guaranteed to depart if I book?

    Tour Details
    • G AdventuresOperatorWritten January 2025

      We operate guaranteed departures so as long as one person is confirmed on a departure, it will be going ahead as planned.

    • C

      Cathy

      TravelerWritten January 2025

      Is it better to arrive a day before the tour starts or on the same day?

    • G AdventuresOperatorWritten January 2025

      You can arrive on the day of the tour, or the day before, and we can add on pre-tour accommodation also if needed.

    • C
      2 more answers
  • A

    Alice

    Asked on November 29th, 2024

    My girlfriend and I are keen on joining the 40 day tour of South East Asia. We are wondering if there is a possibility of us being put in a private room together and what the extra cost would be. Also once finishing are you left in Ko Tao? We are hoping to fly back to the UK from Phuket on 26th/27th June. Do you know of the best transport to get there?

    Accommodation
    Flights / Transfers
    • G AdventuresOperatorWritten November 2024

      Unfortunately we do not have the option to offer private rooms in many of the stops, so it would be in same gender multi share for those nights. We offer an add on of 'Bangkok Express: Ko Tao to Bangkok', so you could easily get back to Bangkok to fly back to the UK from there.

  • N

    Niek

    Asked on October 7th, 2024

    What kind of accommodations can I expect?

    Accommodation
    • G AdventuresOperatorWritten October 2024

      Accommodations can vary and may include hotels, hostels, or homestays with multi-share options.

  • G

    Grace

    Asked on September 29th, 2024

    Is it possible to board in Luang Prabang and continue to the end

    Tour Details
    Transport
    • G AdventuresOperatorWritten September 2024

      We have a tour that starts in Vientiane and ends in Bangkok called Laos to Northern Thailand: Treks & Trails. This tour is only available for travellers aged 18-39.

  • M

    Mouglimed

    Asked on August 20th, 2024

    Can I get a discount if the tour price drops after booking?

    Price / Availability
    • G AdventuresOperatorWritten August 2024

      If the tour price drops after your booking, you may need to rebook to take advantage of a lower price, subject to certain conditions.

  • S

    Sven

    Asked on July 2nd, 2024

    Are there any group size restrictions for the tour?

    Group size
    • G AdventuresOperatorWritten July 2024

      The tour is designed to accommodate a certain group size to ensure an enjoyable experience, but feel free to inquire about specific group size limits.

Can’t find the answer to your question?
Reach out to the experts at G Adventures with your enquiry, they usually respond within 4 hours.
From
$3,799
-25%
US $2,849 per person

Price based on Cheapest Room

Price based on Shared Room

Price based on Private Single Room

Price based on Private Double Room

Select Date

Select departure month

2026

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

2027

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

2028

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1 Adult2 Adults, 1 Child2 Children

Who is travelling?

AdultsAges 18 or above

2

ChildrenUnder 18

0
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Good to Know

Tour ID: 5557

  • Currencies
    Riel
    Cambodia
    Kip
    Laos
    ฿
    Baht
    Thailand
    Dong
    Vietnam
  • Plugs & Adapters

    As a traveler from USA, Canada, Australia, New Zealand, South Africa you will need an adaptor for type G.

    Type G
    Vietnam
  • Vaccines
    • These are only indications, so please visit your doctor before you travel to be 100% sure.
    • Typhoid - Recommended for Cambodia.Laos.Thailand.Vietnam. Ideally 2 weeks before travel.
    • Hepatitis A - Recommended for Cambodia.Laos.Thailand.Vietnam. Ideally 2 weeks before travel.
    • Cholera - Recommended for Cambodia.Laos.Thailand.Vietnam. Ideally 2 weeks before travel.
    • Tuberculosis - Recommended for Cambodia.Laos.Thailand.Vietnam. Ideally 3 months before travel.
    • Hepatitis B - Recommended for Cambodia.Laos.Thailand.Vietnam. Ideally 2 months before travel.
    • Rabies - Recommended for Cambodia.Vietnam. Ideally 1 month before travel.
    • Yellow fever - Certificate of vaccination required if arriving from an area with a risk of yellow fever transmission for Cambodia.Laos.Thailand.Vietnam. Ideally 10 days before travel.
    • Japanese B encephalitis - Recommended for Cambodia.Laos.Thailand.Vietnam. Ideally 1 month before travel.
  • Visa
    • Unfortunately we cannot offer you a visa application service. Whether you need a visa or not depends on your nationality and where you wish to travel. Assuming your home country does not have a visa agreement with the country you're planning to visit, you will need to apply for a visa in advance of your scheduled departure.
    • Here is an indication for which countries you might need a visa. Please contact the local embassy for help applying for visas to these places.
  • Payment information
    • For any tour departing before June 13th, 2026 a full payment is necessary. For tours departing after June 13th, 2026, a minimum payment of 20% is required to confirm your booking with G Adventures. The final payment will be automatically charged to your credit card on the designated due date. The final payment of the remaining balance is required at least 45 days prior to the departure date of your tour. TourRadar never charges you a booking fee and will charge you in the stated currency.
    • Some departure dates and prices may vary and G Adventures will contact you with any discrepancies before your booking is confirmed.
    • The following cards are accepted for "G Adventures" tours: Visa, Maestro, Mastercard, American Express or PayPal. TourRadar does NOT charge you an extra fee for using any of these payment methods.
  • Cancellation Policy
  • Accessibility
    Some tours are not suitable for mobility-restricted traveler, however, some operators may be able to accommodate special requests. For any enquiries, you can contact our customer support team, who are ready and waiting to help you.

Videos

  • South East Asia
  • Why Travel With G Adventures?
South East Asia

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