TRIP OVERVIEW
Trip Dates
14 Mar - 20 Mar |
Available
|
21 Mar - 27 Mar |
Available
|
Tour Highlights
Swim the calm archipelago of Ang Thong Marine Park, east of Koh Samui, exploring coral gardens, bursting with marine life, like turtles, angelfish, groupers, stingrays, and possibly whale sharks too.
Visit Talay Nai (the ‘Emerald Lake’) on the island of Koh Mai, which featured in Danny Boyle’s 2000 film: ‘The Beach’.
Settle into island life at stunning beachside resorts on both Koh Tao (‘Turtle Island’) and Koh Samui, enclosed by peaceful gardens and palm trees.
Trade the party scene of Koh Phangan, for more secluded days of reef swimming with turtles, hiking rainforests and island hopping. A few of our early starts also mean we avoid other tourist boats at more popular reefs.
Sample the world-famous flavours of Thai cuisine – a blend of sweet, sour and salty tastes, balanced with aromatic herbs and spices.
For the first time, we will lead swimming adventures to a shallow inlet known as the Gulf of Thailand, bounded by the shores of the Indochinese and Malay peninsulas. Here we will dive into days of tropical island-hopping, tracing sandy coasts and finding scattered islands, flanked by sheer cliffs, crowned with greenery.
Together, we thread outwards from the mouths of secluded bays to the coral gardens of Ang Thong Marine Park. This protected archipelago is known for its calm conditions, spanning 42 islands, west of Koh Samui – many of which are uninhabited. The local reefs are home to countless species of marine life, including turtles, angelfish, groupers, stingrays, and even whales. It’s a spawning ground for mackerel too and there’s even a chance of crossing paths with whale sharks, if we’re lucky.
On the western shores of the gulf, we will stay on world famous Koh Tao, as well as its southern neighbour Koh Samui – the second largest island in Thailand, with a mountainous interior, wrapped in white-sand beaches and granite headlands. Our time is divided between Thailand’s Pinnacle Resorts, keeping you close to the sea at all times.
While nearby Koh Phangan has a vibrant party scene, culminating in a Full Moon Party on Haad Rin beach, the islands we take you to are much quieter, spanned by rainforest and circled by coral reefs, where sea turtles graze. In fact, Koh Tao is known as the ‘Turtle Island’ due to its local population of endangered hawksbill sea turtles.
Who is this trip for?
This trip is ideal for those looking to explore the Gulf of Thailand and enjoy a supported adventure with varied swims and excursions. It is also ideal for those searching for a unique SwimTrek experience. This trip is also ideal for non-swimming partners, those looking to scuba dive, snorkel or just relax but also enjoy the culture and what Ang Thong National Park as to offer.
Swimmers should have a basic understanding of open water swimming and be capable of completing the average swim distance and average daily swim distance (over the course of two swims) prior to the start of the trip.
The average swim distance is around 2.5km. The average daily swim distance is around 5km (split over a minimum of two swims). Please be aware the actual distance covered may be slightly more during current assisted swims.
We have given this trip a ‘Moderate’ grading. Most swimmers comfortable in the open water will be able to take part and enjoy one of these trips.
Are you a Pioneer?
We are excited to share our entirely new Koh Tao Explorer trip for an action-packed 2026 of adventures. Our first departures will be Pioneer Departures. These are perfect for those who want to get out first to experience the relatively unexplored waters that await us. You will have the opportunity to explore the destination in-depth with an amazing group of swimmers, opening our eyes to the possibilities for future trips.
What's included?
- Fully guided swimming holiday (swimmers only)
- Professional swim guides and full safety escort on all swims (swimmers only)
- Six nights' accommodation
- All breakfasts, lunches and two dinners
- Private trip to Ang Thong National Park and snorkel equipment
- Entrance fee to Ang Thong National Park
- Local English speaking guide
- Return group transfer from the Airport
- Return ferry transfer between Koh Samui and Koh Tao
- Local Representative to help with transfers
- Full ABTOT Financial Protection
What's not included?
- Travel to and from the start of the trip (outside of the group transfer)
- Remaining dinners
- Drinks
- Any additional excursions
Sample Trip Itinerary
Please note that the below daily itineraries are an example of the swims that may take place during your trip, however, actual swim locations and distances will vary according to local weather and swim conditions. Your SwimTrek guides and local boat pilots will determine the most suitable swim locations each day and will communicate the plan with all guests as soon as possible.
Trip Schedule
Day 1
Day 2
Day 3
Day 4
Day 5
Day 6
Day 7
Map
Location Summary
Trip Grading
Trip Information
Getting There
Travel Advice
Related Trips
Photos (click to enlarge)

View looking out over Ang Thong

Ang Thong Marine Park

The beach outside Pinnacle resort in Koh Samui

Tropical beach with coconut palm trees.

Watching the sunset from the pool at Koh Tao resort

Beach outside Koh Samui Resor

Koh Samui seascape.

Lookout view of Ang Thong National Park

Poolside at the Pinnacle Koh Samui Resort

Beachside dining at the Pinnacle Koh Samui Resort

Sunset from the Koh Tao resort in Thailand

View from the Pinnacle resort in Koh Tao

Relaxation at the Pinnacle Koh Tao Resort

Beautiful beach in Koh Tao, Thailand
