Cover photo of Chiang Mai Thailand - SUTHEP 20-DAY 2026 — 26 km, 1131 m elevation gain

Chiang Mai Thailand - SUTHEP 20-DAY 2026

December 6, 2026
Distance
25.6 km
Elevation gain
1131 m
Country
🇹🇭 Thailand
Course weather at your time of passage

The forecast arrives five days before the start.

Here you'll find the elevation profile, an estimated finish time based on your UTMB Index and details of the 3 aid stations to plan your nutrition and hydration segment by segment.

What's your time based on your UTMB?

Times estimated by the RAVIT model, learned from real ultra-trail finish times. Enter your UTMB Index (utmb.world) to get a personalized estimate.

Predicted race time based on your UTMB Index® · field profile (Riegel k=1.03)

UTMB Index®
Normal day
3005007009001000UTMB Index®
SourceUTMB® Index

Share my goal

XBlueskyWhatsAppFacebook

Cut-off times and crew - Chiang Mai Thailand - SUTHEP 20-DAY · 2026

26 km race checkpoints: kilometers, elevation, crew, cut-off time and access
Aid stationCum. kmCum. D+Seg. kmSeg. D+Seg. D-CrewCut-offAccess
W4 Mae Chok Luang4.969 m4.969 m31 mForbidden—
A16 Montha Than Waterfall14.6928 m9.7859 m526 mForbiddenSun 11:30 AM
Chiang Mai PAO Park25.61,131 m11.0203 m575 m—Sun 01:30 PM

Data from the official race rules, checked for every edition. The race rules prevail. Positions are interpolated along the GPX track and are a guide, not official course marking.

What you'll find at each aid station

Aid station contents: products in rows, aid stations in columns
ProductW4 Mae Chok Luangkm 4.9A16 Montha Than Waterfallkm 14.6Chiang Mai PAO Parkkm 25.6
Wateravailableavailableavailable
Brand productsunavailableavailableunavailable
Hot mealunavailableunavailableavailable

Elevation profile

500 M750 M1000 MS01 · W4 Mae Chok Luang KM 4.9 — Alt 357 m D+ cumulé 69 m4.9 KMW4 Mae Chok LuangS02 · A16 Montha Than Waterfall KM 14.6 — Alt 692 m D+ cumulé 928 m14.6 KMA16 Montha Than Water…Start0 KMFinish25.6 KM

The course and its aid stations

Loading track…
GPX

Chiang Mai Thailand - SUTHEP 20-DAY: times, aid-station stops and fuelling needs by UTMB® Index

Between a UTMB® Index of 500 and 800, the estimated finish time on this race runs from 3h18 to 2h09, and the aid-station stop budget from 0h04 to 0h01. The longer the race, the more stops weigh: this is time you should plan to spend standing still, not only running.

SourceUTMB® Index
0h000h030h060h080h113005007009001000UTMB® Index
Estimated time, stop time and fuelling needs on Chiang Mai Thailand - SUTHEP 20-DAY by UTMB Index
UTMB® IndexEstimated timeOf which stopsNight hoursCarbsFluidSodiumCut-off margin
5003h180h040.5198 g2.3 L1,654 mg+3h42
5503h010h030.5181 g2.1 L1,510 mg+3h59
6002h460h030.5166 g1.9 L1,385 mg+4h14
6502h350h020.5155 g1.8 L1,295 mg+4h25
7002h260h020.5146 g1.7 L1,216 mg+4h34
7502h180h020.5138 g1.6 L1,148 mg+4h42
8002h090h010.5129 g1.5 L1,079 mg+4h51

Figures based on 60 g of carbohydrate, 700 mL of fluid and 500 mg of sodium per hour, "average" preparation and mild conditions (15–25 °C). Above 25 °C, count on roughly 900 mL/h and 700 mg/h. Carbohydrate intake is trained: 60 g/h is a floor, 90 g/h assumes a glucose-fructose blend and a gut used to it.

Other trails worth preparing for

Chiang Mai Thailand - SUTHEP 20-DAY over the years

Sources and method

  • Time projection — times by UTMB Index are taken from the actual splits of runners in each level band on previous editions of this race, aid station stops included. No formula is used as long as these results exist.
  • Trail nutrition — hourly targets for carbohydrate, fluid and sodium follow the commonly accepted ultra-endurance guidance. La Clinique du Coureur — Fuelling in trail running
  • Course, aid stations and cut-offs — taken from the event's official rules, which prevail in case of any discrepancy. Official site — Chiang Mai Thailand - SUTHEP 20-DAY

Weather for Chiang Mai Thailand - SUTHEP 20-DAY

The weather for Chiang Mai Thailand - SUTHEP 20-DAY will appear here as soon as the forecast models reach that date, around five days before the start: feels-like temperature, rain, snow, wind and storms, section by section and at your passage time.

Detailed weather for Chiang Mai Thailand - SUTHEP 20-DAY, hour by hour on the course

Frequently asked questions

How many checkpoints?

Chiang Mai Thailand - SUTHEP 20-DAY has 3 checkpoints: 2 aid stations and 1 water point. Details are in the two tables above.

What's the longest segment without aid?

The one leading to Chiang Mai PAO Park: 11.0 km and 203 m elevation gain. That's the one to load up for first.

How do I find the exact location of an aid station?

The Google Maps icon in the “Access” column opens the aid station's location: handy for planning your crew's routes.

What distance and elevation gain?

Chiang Mai Thailand - SUTHEP 20-DAY is 26 km long with 1131 m of elevation gain.

How long to finish?

With a UTMB Index of 600 (average runner), the estimated time is around 2h46 for Chiang Mai Thailand - SUTHEP 20-DAY.

What's the weather forecast?

The weather for Chiang Mai Thailand - SUTHEP 20-DAY will be published on this page around five days before the start, once the forecast models reach the race date. It will be detailed section by section: feels-like temperature, rain, snow, wind and storms.

Want to stack the odds in your favor for Chiang Mai Thailand - SUTHEP 20-DAY?

In 2 minutes, RAVIT generates your complete plan: segment-by-segment time, carbs, water and sodium at every aid station, printable roadbook.

No card required · Instant results