worldsmarathons.com

Samui Trail

Koh Samui, Surat Thani, Thailand

calendar_today 08 Nov, 2026

directions_run Running

sell $20.52 – $72.97

About the Event

Immerse yourself in the enchanting landscapes and vibrant ecosystems of Koh Samui with the Samui Trail, part of the prestigious 4Kings series. This year’s edition invites runners to embark on an unforgettable journey through the lush Southern Forests and pristine South Island trails, where every step reveals a new vista.
The trail starts at Phawanaphothikhun College in Na Mueang Subdistrict, Koh Samui District, Surat Thani Province, offering participants a fresh perspective while maintaining the same level of expertise from previous events. The route winds through dense jungle and along coastal paths, where runners can expect to encounter everything from warm sunlit mornings to misty mountain tops that offer a chilly breeze.
Experience the unique charm of Southern Thailand’s diverse terrain as you navigate varied elevations and terrains. Each section of the trail offers something different: lush greenery under towering trees, sandy beaches with turquoise waters, and panoramic views over the Gulf of Thailand. This event is not just about reaching the finish line; it's an adventure through nature that celebrates the beauty and tranquility of Koh Samui’s untouched wilderness.
Whether you’re a seasoned runner or new to trail running, the Samui Trail promises an enriching experience with breathtaking scenery at every turn.
Join us for this year’s edition as we explore a hidden gem on one of Thailand's most beautiful islands.

Races Offered

SMT15

Nov 08, 2026

straighten

Distance — 15K

terrain

Type — Running

timer

125 days remaining

sell

$43.32

SMT25

Nov 08, 2026

straighten

Distance — 25K

terrain

Type — Running

timer

125 days remaining

sell

$58.15

SMT55

Nov 08, 2026

straighten

Distance — 55K

terrain

Type — Running

timer

125 days remaining

sell

$72.97

SMT7

Nov 08, 2026

straighten

Distance — 7K

terrain

Type — Running

timer

125 days remaining

sell

$20.52

Weather History

These values represent the 3-year monthly averages for November in Koh Samui.

thermostat Temperature

22.3° / 26.2°

wb_sunny Feels like

24.2° / 28.0°

light_mode Avg sunshine hours

8h 25m

water_drop Avg rainfall

10.0 mm

ac_unit Avg snowfall

—

air Avg wind speed

11.4 km/h (Light breeze)

opacity Sweat loss rate

High

terrain Course conditions

Hard and dry surface

sunny Max UV Index

Low (2.8)

humidity_mid Humidity

83.8%

wb_twilight Sunrise

06:13

nightlight Sunset

17:55

About Koh Samui

Learn more about the host city, Koh Samui.

Ko Samui or Koh Samui, often locally shortened to Samui, is an island off the east coast of Thailand. Geographically in the Chumphon Archipelago, it is part of Surat Thani Province, though as of 2012, Ko Samui was granted municipal status and thus is now locally self-governing. Ko Samui, with an area of 228.7 square kilometres (88.3 sq mi), is Thailand's second largest island after Phuket. In 2018, it was visited by 2.7 million tourists.