TDLS - Ultra Trail de la Sibérie - BE - 57K 2027
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.
Cut-off times and crew - TDLS - Ultra Trail de la Sibérie - BE - 57K · 2027
| Aid station | Cum. km | Cum. D+ | Seg. km | Seg. D+ | Seg. D- | Crew | Cut-off | Access |
|---|---|---|---|---|---|---|---|---|
| Arrivée | 52.3 | 1,646 m | 52.3 | 1,646 m | 1,641 m | — | — |
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
The course and its aid stations
TDLS - Ultra Trail de la Sibérie - BE - 57K: 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 7h28 to 4h40, and the aid-station stop budget from 0h16 to 0h06. The longer the race, the more stops weigh: this is time you should plan to spend standing still, not only running.
Source
| UTMB® Index | Estimated time | Of which stops | Night hours | Carbs | Fluid | Sodium |
|---|---|---|---|---|---|---|
| 500 | 7h28 | 0h16 | — | 448 g | 5.2 L | 3,735 mg |
| 550 | 6h47 | 0h13 | — | 407 g | 4.7 L | 3,391 mg |
| 600 | 6h11 | 0h11 | — | 371 g | 4.3 L | 3,089 mg |
| 650 | 5h45 | 0h09 | — | 345 g | 4 L | 2,875 mg |
| 700 | 5h20 | 0h08 | — | 320 g | 3.7 L | 2,671 mg |
| 750 | 5h01 | 0h07 | — | 301 g | 3.5 L | 2,506 mg |
| 800 | 4h40 | 0h06 | — | 280 g | 3.3 L | 2,335 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
- Bossière - 33km33 km · 481 m D+ · October 18, 2026
- Kasterlee - Natuurmarathon43 km · 200 m D+ · November 15, 2026
- Trail du BW - 42km41 km · 878 m D+ · December 5, 2026
- Trail du BW - 62 km62 km · 1,207 m D+ · December 5, 2026
- TDLS - Ultra Trail de la Sibérie - BE - 35K35 km · 1,383 m D+ · February 20, 2027
- TDLS - Ultra Trail de la Sibérie - BE - 75K74 km · 2,459 m D+ · February 20, 2027
- TDLS - Ultra Trail de la Sibérie - BE - 42km43 km · 1,525 m D+ · February 20, 2027
- Andenne - L'Ultra50 km · 1,346 m D+ · September 20, 2026
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 — TDLS - Ultra Trail de la Sibérie - BE - 57K
Weather for TDLS - Ultra Trail de la Sibérie - BE - 57K
The weather for TDLS - Ultra Trail de la Sibérie - BE - 57K 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 TDLS - Ultra Trail de la Sibérie - BE - 57K, hour by hour on the courseFrequently asked questions
How many checkpoints?
TDLS - Ultra Trail de la Sibérie - BE - 57K has 1 checkpoint: 1 checkpoint with undocumented contents. Details are in the two tables above.
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?
TDLS - Ultra Trail de la Sibérie - BE - 57K is 52 km long with 1646 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 6h11 for TDLS - Ultra Trail de la Sibérie - BE - 57K.
What's the weather forecast?
The weather for TDLS - Ultra Trail de la Sibérie - BE - 57K 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 TDLS - Ultra Trail de la Sibérie - BE - 57K?
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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