Trail du Saint Jacques - 100M - Ultra du Saint Jacques 2027

June 18, 2027

Distance

138.7 km

Elevation gain

5880 m

Country

🇫🇷 France

Download the GPX Official race website

Course weather at your time of passage

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 12 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.

Predicted race time based on your UTMB Index® · smoothed times achieved by runners at your level in past editions

UTMB Index®

Peaking20h17

Normal day

from Peaking (P10) to Survival mode (P90)extended based on 209,157 finishers from 222 racesCalibrated UTMB® points

Source

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Cut-off times and crew - Trail du Saint Jacques - 100M - Ultra du Saint Jacques · 2027

139 km race checkpoints: kilometers, elevation, crew, cut-off time and access
Aid station	Cum. km	Cum. D+	Seg. km	Seg. D+	Seg. D-	Crew	Cut-off
Saint Julien des Chazes	17.8	440 m	17.8	440 m	856 m	—	—
Lespitalet	24.8	902 m	6.9	462 m	69 m	Forbidden	—
Prades	40.8	1,449 m	16.1	547 m	929 m	Allowed	—
Monistrol	56.1	2,348 m	15.3	899 m	837 m	Allowed	—
Saint Privat	63.9	2,881 m	7.8	533 m	262 m	Allowed	—
Saint Jean Lachalm	72.7	3,608 m	8.8	727 m	446 m	Allowed	—
Alleyras	84.7	4,167 m	12.0	559 m	935 m	Forbidden	—
Lac du Bouchet	100.2	4,961 m	15.5	794 m	326 m	Allowed	—
Bains	116.0	5,515 m	15.8	554 m	625 m	Forbidden	—
Saint Christophe sur Dolaizon	122.8	5,524 m	6.7	9 m	272 m	Allowed	—
Les Chibottes	133.1	5,769 m	10.4	245 m	388 m	Forbidden	—
Le Puy en Velay	138.7	5,881 m	5.6	112 m	250 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: products in rows, aid stations in columns
Product	Saint Julien des Chazeskm 17.8	Lespitaletkm 24.8	Pradeskm 40.8	Monistrolkm 56.1	Saint Privatkm 63.9	Saint Jean Lachalmkm 72.7	Alleyraskm 84.7	Lac du Bouchetkm 100.2	Bainskm 116.0	Saint Christophe sur Dolaizonkm 122.8	Les Chibotteskm 133.1	Le Puy en Velaykm 138.7
Water	available	available	available	available	available	available	available	available	available	available	available	available
Brand products · Näak	unavailable	available	available	available	available	unavailable	available	unavailable	unavailable	available	available	available
Hot meal	unavailable	unavailable	unavailable	unavailable	unavailable	available	unavailable	available	unavailable	unavailable	unavailable	unavailable

Elevation profile

The course and its aid stations

Loading track…

GPX

ravit.live

Trail du Saint Jacques - 100M - Ultra du Saint Jacques: 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 26h22 to 15h34. 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

Below a UTMB® Index of roughly 380, the overall cut-off of 30h50 is no longer reachable at the estimated pace.

Estimated time, stop time and fuelling needs on Trail du Saint Jacques - 100M - Ultra du Saint Jacques by UTMB Index
UTMB® Index	Estimated time	Night hours	Carbs	Fluid	Sodium	Cut-off margin
500	26h22	10.4	1,582 g	18.5 L	13,183 mg	+4h28
550	24h16	10	1,456 g	17 L	12,133 mg	+6h34
600	22h38	10	1,358 g	15.8 L	11,317 mg	+8h12
650	20h40	10	1,240 g	14.5 L	10,333 mg	+10h10
700	18h52	10	1,132 g	13.2 L	9,433 mg	+11h58
750	17h31	10	1,051 g	12.3 L	8,758 mg	+13h19
800	15h34	10	934 g	10.9 L	7,783 mg	+15h16

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

922 starters, 33.5% DNF rate, 12 timed checkpoints.

Duration of each segment on edition 2026: median and middle half of field
Segment	km	Median	Middle half	Measured
Saugues → Saint-Julien des Chazes	17.9	2 h 02	1 h 49 – 2 h 12	917
Saint-Julien des Chazes → Lespitalet	24.8	1 h 04	57 min – 1 h 09	888
Lespitalet → Prades	40.5	2 h 44	2 h 26 – 3 h 04	832
Prades → Monistrol	56.2	2 h 55	2 h 38 – 3 h 18	827
Monistrol → Saint-Privat d'Allier	63.7	1 h 30	1 h 21 – 1 h 38	793
Saint-Privat d'Allier → Saint Jean Lachalm	72.7	2 h 04	1 h 53 – 2 h 17	784
Saint Jean Lachalm → Alleyras	84.7	2 h 35	2 h 16 – 2 h 54	739
Alleyras → Lac du Bouchet	100	3 h 04	2 h 41 – 3 h 29	688
Lac du Bouchet → Saint-Christophe-sur-Dolaizon	122.7	4 h 30	3 h 55 – 4 h 58	605
Saint-Christophe-sur-Dolaizon → Pont de la Roche	126.1	43 min	35 min – 51 min	592
Pont de la Roche → Les Chibottes	132.9	1 h 18	1 h 09 – 1 h 29	595
Les Chibottes → Le-Puy-en-Velay	138.6	56 min	48 min – 1 h 08	606

Where runners drop out. Lac du Bouchet (72) · Lespitalet (56) · Alleyras (50) out of 309 total DNFs.

RAVIT record from the official timing of the 2026 edition, data from September 14, 2026.

Source

See segment-by-segment analysis of Trail du Saint Jacques - 100M - Ultra du Saint Jacques

Other trails worth preparing for

Trail du Saint Jacques - 100M - Ultra du Saint Jacques over the years

Trail du Saint Jacques - 100M - Ultra du Saint Jacques 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 — Trail du Saint Jacques - 100M - Ultra du Saint Jacques

Weather for Trail du Saint Jacques - 100M - Ultra du Saint Jacques

The weather for Trail du Saint Jacques - 100M - Ultra du Saint Jacques 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 - 100M - Ultra du Saint Jacques, hour by hour on the course

Frequently asked questions

How many checkpoints?

Trail du Saint Jacques - 100M - Ultra du Saint Jacques has 12 checkpoints: 10 aid stations and 2 water points. Details are in the two tables above.

What's the longest segment without aid?

The one leading to Saint Julien des Chazes: 17.8 km and 440 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 - 100M - Ultra du Saint Jacques is 139 km long with 5880 m of elevation gain.

How long to finish?

With a UTMB Index of 600 (average runner), the estimated time is around 22h38 for Trail du Saint Jacques - 100M - Ultra du Saint Jacques.

What's the weather forecast?

The weather for Trail du Saint Jacques - 100M - Ultra du Saint Jacques 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 - 100M - Ultra du Saint Jacques?

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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