The road to your own record
Picture the course in advance
and find the pace that fits you.

The city you want to run becomes your next trip.




THE DREAM
Held in Nong Khai, on the Mekong River in northeastern Thailand.
This is an AIMS-registered race.
Picture the course in advance
and find the pace that fits you.
Streets lined with cheers, runners all around.
You'll be part of that scene.
Take it slow with the finish still in you,
and meet the city all over again.
From the joy of finishing to the tough moments — read what runners wrote themselves.
No runner reports yet. We'll add them here as they come in.
Preview the course and read what runners who went before you wrote.
This may be from a past edition. Check the organizer for this year's course and operations.
YOUR ENTRY
Here are the ways to enter and what each requires.
Check the organizer's page for whether entries are open.
Registration is by contacting the race organizers directly (Race.nongkhai42.com, Facebook page), rather than through online registration.
This is an independently operated race that does not use major Thai platforms such as RunLah.
100 km ultra (start 18:30, time limit 18 hours), 42.195 km marathon (start 03:00, time limit 7 hours).
RACE WEEK
Know the course and time limit, and race day comes into focus.
From the 2026 edition100km (SOLO·TEAM) 18 hours — 8/2 12:00 cutoff / 42km 7 hours — 8/2 10:00 cutoff / 10 miles 3 hours — 8/2 07:30 cutoff / Fun Run 6.7km time limit none
| Event | Time limit |
|---|---|
| Marathon42.195km | 7h |
start in front of the Mandap Maha Chedi Si Sattanak (42km starts at the same location as the 100km)
Start · Google MapsRunners start · local time — 100km SOLO·100km TEAM: August 1, 18:00 / 42km: August 2, 03:00 / 10 miles: August 2, 04:30 / Fun Run 6.7km: August 2, 05:30
Course follows the Mekong River in the Tha Bo area of Nong Khai, Thailand.
Not yet confirmed in the official race guide
This may change for the next edition.
Pick up your bib, check your wave.
So on race morning, you can just run.
no train/bus station at the venue — Wat Champa Thong, Ban Nong Yang Kham, Tambon Kong Nang, Amphoe Tha Bo, Nong Khai (rural, ~15-20 km west of Nong Khai town via Highway 211)
Course runs in laps around a reservoir/dam near the temple. Nearest transit hub is Nong Khai railway station (northern terminus of the line from Bangkok, near the Thai-Lao Friendship Bridge), but requires a car/taxi/songthaew onward — no organizer shuttle found.
The current official site is race.nongkhai42.com (the older nongkhaimarathon.com is stale).
Your start time, fuel and bag drop.
Know them ahead and the run feels easier.
The event takes place on August 1–2 in the Tha Bo area of Nong Khai, Thailand,
and is sanctioned by the Association of International Marathons and Distance Races (AIMS).
It is divided into five categories: 100km (solo and team), 42km, 10 miles, and 6.7km Fun Run.
The 100km event starts at 6:00 p.m. on the first day, with an 18-hour time limit until noon the following day.
The 42km starts at 3:00 a.m. on the second day, with a 7-hour time limit and an time limit at 10:00 a.m. The 10-mile event starts at 4:30 a.m.,
with a 3-hour time limit at 7:30 a.m. The 6.7km Fun Run starts at 5:30 a.m. and has no separate time limit.
Times are local to Nong Khai. Check the latest official information before the race.
STAY A LITTLE
From a hotel that makes race morning easy,
to the meals and views you'll enjoy with the medal on.
Hotel · 4.2km
View on Booking.com₩93,279
View on Klook₩59,360
View on Klook₩67,840
View on KlookAccommodation · 3.2km
View on Booking.com₩67,840
View on Klook₩67,840
View on KlookDistances are straight-line from the start/finish area.
Check real travel times and booking terms with each hotel.
Hotel · 4.2km
View on Booking.comAccommodation · 3.2km
View on Booking.comAccommodation · 2.5km
View on Booking.comSwipe sideways to see more hotels.
Rest a little, wander a little.
Pick what suits you and whoever you're with.
₩93,279
View on Klook₩67,840
View on Klook₩77,185
View on Klook₩74,762
View on Klook₩88,261
View on Klook₩51,745
View on KlookA meal before the race, a dinner to celebrate the finish.
₩59,360
View on KlookThe city you ran — this time, a little slower.
₩67,840
View on Klook₩67,840
View on Klook₩67,840
View on Klook₩93,972
View on Klook₩121,834
View on KlookOnce saved, you can open this page without an internet connection
Be the first runner
Leave this room's first post
It takes place on Sat, July 10, 2027 in Nong Khai, Thailand.
Entry routes: General entry.
Registration is handled on the official website.
(From the 2026 edition)
Marathon · Half · 10K · Ultra. (From the 2026 edition)
Wat Champa Thong, Tha Bo, Nong Khai. (From the 2026 edition)
Course follows the Mekong River in the Tha Bo area of Nong Khai, Thailand.
Wat Champa Thong, Tha Bo, Nong Khai — same as start location.
(From the 2026 edition)