Mountain Ultra Trail - MUT Marathon by UTMB® 2027
This page is generated independently by RAVIT. RAVIT is not affiliated with UTMB Group SAS, the race's official organizer.
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 3 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 - Mountain Ultra Trail - MUT Marathon by UTMB® · 2027
| Aid station | Cum. km | Cum. D+ | Seg. km | Seg. D+ | Seg. D- | Crew | Cut-off | Access |
|---|---|---|---|---|---|---|---|---|
| Montagu Pass | 15.1 | 0 m | 15.1 | 993 m | 493 m | Forbidden | Sat 12:00 PM | — |
| Tierkop | 28.6 | 0 m | 13.4 | 809 m | 872 m | Forbidden | Sat 05:00 PM | — |
| Trail Kiosk | 41.4 | 0 m | 12.9 | 489 m | 915 m | Forbidden | — | — |
| Finish | 43.5 | 0 m | 2.0 | 21 m | 30 m | — | Sat 08:00 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
| Product | Montagu Passkm 15.1 | Tierkopkm 28.6 | Trail Kioskkm 41.4 |
|---|---|---|---|
| Water | available | available | available |
| Brand products · Näak | available | available | unavailable |
La feuille de ton assistance pour Mountain Ultra Trail - MUT Marathon by UTMB® · 2027
L'assistance n'est autorisée sur aucun poste de cette course.
Elevation profile
The course and its aid stations
Mountain Ultra Trail - MUT Marathon by UTMB®: 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 7h07 to 4h18, and the aid-station stop budget from 0h13 to 0h04. 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 | 7h07 | 0h13 | — | 427 g | 5 L | 3,560 mg | +4h53 |
| 550 | 6h27 | 0h10 | — | 387 g | 4.5 L | 3,222 mg | +5h33 |
| 600 | 5h49 | 0h08 | — | 349 g | 4.1 L | 2,907 mg | +6h11 |
| 650 | 5h21 | 0h07 | — | 321 g | 3.7 L | 2,675 mg | +6h39 |
| 700 | 4h54 | 0h06 | — | 294 g | 3.4 L | 2,448 mg | +7h06 |
| 750 | 4h35 | 0h05 | — | 275 g | 3.2 L | 2,294 mg | +7h25 |
| 800 | 4h18 | 0h04 | — | 258 g | 3 L | 2,149 mg | +7h42 |
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
474 starters, 5.5% DNF rate, 4 timed checkpoints.
| Segment | km | Median | Middle half | Measured | Median passage | Still ranked |
|---|---|---|---|---|---|---|
| Start → Montagu Pass | 15.2 | 2 h 26 | 2 h 07 – 2 h 43 | 470 | 2 h 25 | 470 |
| Montagu Pass → Tierkop | 28.6 | 2 h 51 | 2 h 22 – 3 h 21 | 461 | 5 h 12 | 461 |
| Tierkop → Trail Kiosk | 41.5 | 2 h 24 | 2 h 05 – 2 h 49 | 452 | 7 h 36 | 453 |
| Trail Kiosk → Finish | 43.5 | 15 min | 13 min – 17 min | 447 | 7 h 51 | 448 |
“Median passage” is elapsed time from the start, not a clock time: the clock time depends on the edition.
Where runners drop out. Montagu Pass (9) · Tierkop (8) · Trail Kiosk (5) out of 26 total DNFs.
RAVIT record from the official timing of the 2026 edition, data from September 20, 2026.
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In the 2027 ranking
Mountain Ultra Trail - MUT Marathon by UTMB® is 43 km and 2,312 m of elevation gain, that's 66 km-effort: category S, among 163 races in 2027. Its time limit of 12 h requires a minimum speed of 3.6 km/h: rank 20 out of 145 of the widest cut-off times in S.
S trails 2027: 45 to 74 km-effort
Similar effort in 2027
- TRAIL DES ANGES - MARATRAIL DE L'ARGENTIERE · 66 km-effort
- The Canyons Endurance Runs - 50K · 66 km-effort
- Pacifico 50k · 66 km-effort
Other trails worth preparing for
Mountain Ultra Trail - MUT Marathon by UTMB® 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 — Mountain Ultra Trail - MUT Marathon by UTMB®
Weather for Mountain Ultra Trail - MUT Marathon by UTMB®
The weather for Mountain Ultra Trail - MUT Marathon by UTMB® 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 Mountain Ultra Trail - MUT Marathon by UTMB®, hour by hour on the courseFrequently asked questions
How many checkpoints?
Mountain Ultra Trail - MUT Marathon by UTMB® has 4 checkpoints: 2 aid stations, 1 water point, and 1 checkpoint with undocumented contents. Details are in the two tables above.
What's the longest segment without aid?
The one leading to Montagu Pass: 15.1 km and 0 m elevation gain. That's the one to load up for first.
What distance and elevation gain?
Mountain Ultra Trail - MUT Marathon by UTMB® is 43 km long with 2312 m of elevation gain.
How long to finish?
With a UTMB® Index of 600 (average runner), the estimated time is around 5h49 for Mountain Ultra Trail - MUT Marathon by UTMB®.
What's the weather forecast?
The weather for Mountain Ultra Trail - MUT Marathon by UTMB® 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 Mountain Ultra Trail - MUT Marathon by UTMB®?
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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