SMT55 2026
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 7 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.
Cut-off times and crew - SMT55 · 2026
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
| Product | CP1 The Greenkm 7.6 | A1 Ban Dechkm 10.4 | WS1 Ban Dew, Lamaikm 18.2 | WS2 Lan Lan Dao, Chawengkm 28.1 | WS3 Tree Bridge Ziplinekm 40.2 | A1 Ban Dech (2)km 43.6 | WS4 Mae Nam Soi 7km 48.1 |
|---|---|---|---|---|---|---|---|
| Water | available | available | available | available | available | available | available |
| Brand products | available | available | available | available | available | available | available |
Elevation profile
The course and its aid stations
SMT55: 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 10h38 to 6h43, and the aid-station stop budget from 0h23 to 0h08. The longer the race, the more stops weigh: this is time you should plan to spend standing still, not only running.
| UTMB® Index | Estimated time | Of which stops | Night hours | Carbs | Fluid | Sodium |
|---|---|---|---|---|---|---|
| 500 | 10h38 | 0h23 | 7.6 | 638 g | 7.4 L | 5,317 mg |
| 550 | 9h40 | 0h19 | 6.7 | 580 g | 6.8 L | 4,837 mg |
| 600 | 8h55 | 0h16 | 5.9 | 535 g | 6.2 L | 4,458 mg |
| 650 | 8h20 | 0h13 | 5.3 | 500 g | 5.8 L | 4,167 mg |
| 700 | 7h45 | 0h11 | 4.8 | 465 g | 5.4 L | 3,874 mg |
| 750 | 7h20 | 0h10 | 4.3 | 440 g | 5.1 L | 3,663 mg |
| 800 | 6h43 | 0h08 | 3.7 | 403 g | 4.7 L | 3,361 mg |
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 - PAGODA 50-NIGHT57 km · 3,505 m D+ · November 28, 2026
- Chiang Mai Thailand - PAGODA 50-DAY57 km · 3,505 m D+ · November 28, 2026
- Chiang Mai Thailand - HMONG 50-DAY63 km · 2,915 m D+ · December 5, 2026
- Chiang Mai Thailand - HMONG 50-NIGHT63 km · 2,915 m D+ · December 5, 2026
- Amazean Jungle Thailand - JUNGLE 50K56 km · 2,812 m D+ · May 1, 2027
- Mu Cang Chai Ultra Trail 55K56 km · 2,850 m D+ · October 3, 2026
- Chiang Mai Thailand - HMONG50 DAY56 km · 2,587 m D+ · December 6, 2025
- Chiang Mai Thailand - INTHANON 5039 km · 2,420 m D+ · November 30, 2025
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 — SMT55
Weather for SMT55
The weather for SMT55 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 SMT55, hour by hour on the courseFrequently asked questions
How many checkpoints?
SMT55 has 8 checkpoints: 7 aid stations and 1 checkpoint with undocumented contents. Details are in the two tables above.
What's the longest segment without aid?
The one leading to WS3 Tree Bridge Zipline: 12.0 km and 787 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?
SMT55 is 55 km long with 3908 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 8h55 for SMT55.
What's the weather forecast?
The weather for SMT55 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 SMT55?
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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