Cover photo of Chiang Mai Thailand - SUTHEP 20-NIGHT 2025 — 21 km, 1212 m elevation gain

Chiang Mai Thailand - SUTHEP 20-NIGHT 2025

December 6, 2025
Distance
21.2 km
Elevation gain
1212 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 and an estimated finish time based on your UTMB Index.

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® · smoothed times achieved by runners at your level in past editions

UTMB Index®
Peaking03h05
Normal day
3005007009001000UTMB Index®
from Peaking (P10) to Survival mode (P90)extended based on 209,157 finishers from 222 racesCalibrated UTMB® points
SourceUTMB® IndexLiveTrail

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Cut-off times and crew - Chiang Mai Thailand - SUTHEP 20-NIGHT · 2025

21 km race checkpoints: kilometers, elevation, crew, cut-off time and access
Aid stationCum. kmCum. D+Seg. kmSeg. D+Seg. D-CrewCut-offAccess
A16 Khun Chang Khian Monastry9.40 m9.41,108 m78 m—Sat 08:00 PM—
Chiang Mai PAO Park21.20 m11.8104 m1,134 m—Sat 11:00 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 not documented.

Elevation profile

500 M750 M1000 M1250 MS01 · A16 Khun Chang Khian Monastry KM 9.4 — Alt 1350 m D+ cumulé 0 m9.4 KMA16 Khun Chang Khian …Start0 KMFinish21.2 KM

The course and its aid stations

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GPX

Chiang Mai Thailand - SUTHEP 20-NIGHT: 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 3h26 to 1h58. These times include aid-station stops: they come from real durations between two timing points, and this race's timing does not measure stops separately.

SourceUTMB® Index
Estimated time, stop time and fuelling needs on Chiang Mai Thailand - SUTHEP 20-NIGHT by UTMB Index
UTMB® IndexEstimated timeNight hoursCarbsFluidSodiumCut-off margin
5003h26—206 g2.4 L1,717 mg+3h33
5503h06—186 g2.2 L1,550 mg+3h53
6002h50—170 g2 L1,417 mg+4h09
6502h31—151 g1.8 L1,258 mg+4h28
7002h18—138 g1.6 L1,150 mg+4h41
7502h07—127 g1.5 L1,058 mg+4h52
8001h58—118 g1.4 L983 mg+5h01

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 in France

Chiang Mai Thailand - SUTHEP 20-NIGHT 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-NIGHT

Weather for Chiang Mai Thailand - SUTHEP 20-NIGHT

The weather for Chiang Mai Thailand - SUTHEP 20-NIGHT 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-NIGHT, hour by hour on the course

Frequently asked questions

How many checkpoints?

Chiang Mai Thailand - SUTHEP 20-NIGHT has 2 checkpoints: 2 checkpoints with undocumented contents. Details are in the two tables above.

What distance and elevation gain?

Chiang Mai Thailand - SUTHEP 20-NIGHT is 21 km long with 1212 m of elevation gain.

How long to finish?

With a UTMB Index of 600 (average runner), the estimated time is around 2h50 for Chiang Mai Thailand - SUTHEP 20-NIGHT.

What's the weather forecast?

The weather for Chiang Mai Thailand - SUTHEP 20-NIGHT 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-NIGHT?

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

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