Trail du Saint Jacques - Le 12 du Dolaizon 2027
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 2 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 - Trail du Saint Jacques - Le 12 du Dolaizon · 2027
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 | Les Chibotteskm 6.7 | Le Puy-en-Velaykm 12.2 |
|---|---|---|
| Water | available | available |
| Brand products | available | available |
Elevation profile
The course and its aid stations
Trail du Saint Jacques - Le 12 du Dolaizon: 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 1h18 to 0h52, and the aid-station stop budget from 0h01 to 0h01. 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 | Cut-off margin |
|---|---|---|---|---|---|---|---|
| 500 | 1h18 | 0h01 | — | 78 g | 0.9 L | 654 mg | +1h12 |
| 550 | 1h12 | 0h01 | — | 72 g | 0.8 L | 601 mg | +1h18 |
| 600 | 1h06 | 0h01 | — | 66 g | 0.8 L | 551 mg | +1h24 |
| 650 | 1h02 | 0h01 | — | 62 g | 0.7 L | 518 mg | +1h28 |
| 700 | 0h59 | 0h01 | — | 59 g | 0.7 L | 488 mg | +1h31 |
| 750 | 0h55 | 0h01 | — | 55 g | 0.6 L | 460 mg | +1h35 |
| 800 | 0h52 | 0h01 | — | 52 g | 0.6 L | 432 mg | +1h38 |
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
323 starters, 0% DNF rate, 2 timed checkpoints.
| Segment | km | Median | Middle half | Measured |
|---|---|---|---|---|
| Saint-Christophe-sur-Dolaizon → Les Chibottes | 6.7 | 52 min | 44 min – 1 h 00 | 321 |
| Les Chibottes → Le-Puy-en-Velay | 12.2 | 44 min | 37 min – 50 min | 321 |
RAVIT record from the official timing of the 2026 edition, data from September 14, 2026.
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Trail du Saint Jacques - Le 12 du Dolaizon 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 du Saint Jacques - Le 12 du Dolaizon
Weather for Trail du Saint Jacques - Le 12 du Dolaizon
The weather for Trail du Saint Jacques - Le 12 du Dolaizon 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 du Saint Jacques - Le 12 du Dolaizon, hour by hour on the courseFrequently asked questions
How many checkpoints?
Trail du Saint Jacques - Le 12 du Dolaizon has 2 checkpoints: 2 aid stations. Details are in the two tables above.
What's the longest segment without aid?
The one leading to Les Chibottes: 6.7 km and 130 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?
Trail du Saint Jacques - Le 12 du Dolaizon is 12 km long with 244 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 1h06 for Trail du Saint Jacques - Le 12 du Dolaizon.
What's the weather forecast?
The weather for Trail du Saint Jacques - Le 12 du Dolaizon 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 du Saint Jacques - Le 12 du Dolaizon?
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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