Trail Alsace - Trail des Celtes 2026
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
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Cut-off times and crew - Trail Alsace - Trail des Celtes · 2026
| Aid station | Cum. km | Cum. D+ | Seg. km | Seg. D+ | Seg. D- | Crew | Cut-off | Access |
|---|---|---|---|---|---|---|---|---|
| Abbaye de Niedermunster | 17.1 | 0 m | 17.1 | 728 m | 424 m | — | Sun 10:45 AM | — |
| Klingenthal | 24.6 | 0 m | 7.5 | 153 m | 355 m | — | Sun 12:15 PM | — |
| Rosheim | 40.8 | 0 m | 16.2 | 544 m | 665 m | — | Sun 03:35 PM | — |
| Obernai | 48.3 | 0 m | 7.6 | 188 m | 197 m | — | Sun 05:00 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
The course and its aid stations
Trail Alsace - Trail des Celtes: 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 6h04 to 3h45. 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.
Source| UTMB® Index | Estimated time | Night hours | Carbs | Fluid | Sodium | Cut-off margin |
|---|---|---|---|---|---|---|
| 500 | 6h04 | — | 364 g | 4.2 L | 3,033 mg | +3h56 |
| 550 | 5h31 | — | 331 g | 3.9 L | 2,758 mg | +4h29 |
| 600 | 5h08 | — | 308 g | 3.6 L | 2,567 mg | +4h52 |
| 650 | 4h41 | — | 281 g | 3.3 L | 2,342 mg | +5h19 |
| 700 | 4h10 | — | 250 g | 2.9 L | 2,083 mg | +5h50 |
| 750 | 3h53 | — | 233 g | 2.7 L | 1,942 mg | +6h07 |
| 800 | 3h45 | — | 225 g | 2.6 L | 1,875 mg | +6h15 |
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.
Measured on the 2026 edition: the field checkpoint by checkpoint
1,912 starters, 2.2% DNF rate, 4 timed checkpoints.
| Segment | km | Median | Middle half | Measured |
|---|---|---|---|---|
| Barr → Abbaye de Niedermunster | 17.1 | 2 h 12 | 1 h 58 – 2 h 26 | 1,899 |
| Abbaye de Niedermunster → Klingenthal | 24.6 | 50 min | 45 min – 57 min | 1,894 |
| Klingenthal → Rosheim | 40.8 | 2 h 15 | 1 h 59 – 2 h 33 | 1,871 |
| Rosheim → Obernai | 48.3 | 1 h 02 | 54 min – 1 h 10 | 1,869 |
Where runners drop out. Klingenthal (24) · Barr (11) · Abbaye de Niedermunster (5) out of 42 total DNFs.
RAVIT record from the official timing of the 2026 edition, data from September 15, 2026.
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Trail Alsace - Trail des Celtes 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 — Trail Alsace - Trail des Celtes
Weather for Trail Alsace - Trail des Celtes
The weather for Trail Alsace - Trail des Celtes 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 Trail Alsace - Trail des Celtes, hour by hour on the courseFrequently asked questions
How many checkpoints?
Trail Alsace - Trail des Celtes has 4 checkpoints: 4 checkpoints with undocumented contents. Details are in the two tables above.
What distance and elevation gain?
Trail Alsace - Trail des Celtes is 48 km long with 1613 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 5h08 for Trail Alsace - Trail des Celtes.
What's the weather forecast?
The weather for Trail Alsace - Trail des Celtes 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 Trail Alsace - Trail des Celtes?
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