Mountain Masochist 100k 2026
Forecast published: 36°F feels-like at the coldest, 60°F at the warmest, no notable rain.
Here you'll find the elevation profile, an estimated finish time based on your UTMB Index and details of the 14 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 Masochist 100k · 2026
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 | Forest Gate 1 (Fluid)km 3.7 | Salt Log Gap 1 (Aid)km 13.9 | Loop 1 (Aid)km 18.6 | Cabin 1 (Aid)km 24.5 | Long Mountain 1 (Aid)km 32.3 | Reservoir 1 (Aid)km 36.6 | Robinson Gap (Aid)km 47.5 | Reservoir 2 (Aid)km 58.4 | Long Mountain 2 (Aid)km 62.7 | Cabin 2 (Aid)km 70.5 | Loop 2 (Aid)km 73.4 | Loop 3 (Aid)km 82.6 | Salt Log Gap 2 (Aid)km 87.3 | Forest Gate 2 (Fluid)km 97.4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water | available | available | available | available | available | available | available | available | available | available | available | available | available | available |
| Brand products | unavailable | available | available | available | available | available | available | available | available | available | available | available | available | unavailable |
La feuille de ton assistance pour Mountain Masochist 100k · 2026
Ton assistance peut te voir à ces postes. Ton plan RAVIT y met tes heures, ce qu'elle te tend et la route pour y aller.
- Salt Log Gap 1 (Aid)km 13.9
- Loop 1 (Aid)km 18.6
- Cabin 1 (Aid)km 24.5
- Long Mountain 1 (Aid)km 32.3
- Robinson Gap (Aid)km 47.5
- Long Mountain 2 (Aid)km 62.7
- Cabin 2 (Aid)km 70.5
- Loop 2 (Aid)km 73.4
- Loop 3 (Aid)km 82.6
- Salt Log Gap 2 (Aid)km 87.3
Recto, verso et planche d'étiquettes, en PDF : l'exemple d'une coureuse de l'UTMB.
Elevation profile
The course and its aid stations
Mountain Masochist 100k: 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 16h42 to 9h50, and the aid-station stop budget from 0h56 to 0h19. 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 | 16h42 | 0h56 | 2.7 | 1,002 g | 11.7 L | 8,352 mg |
| 550 | 15h10 | 0h46 | 2.5 | 910 g | 10.6 L | 7,585 mg |
| 600 | 13h31 | 0h36 | 2.5 | 811 g | 9.5 L | 6,756 mg |
| 650 | 12h30 | 0h31 | 2.5 | 750 g | 8.7 L | 6,248 mg |
| 700 | 11h32 | 0h26 | 2.5 | 692 g | 8.1 L | 5,763 mg |
| 750 | 10h35 | 0h22 | 2.5 | 635 g | 7.4 L | 5,292 mg |
| 800 | 9h50 | 0h19 | 2.5 | 590 g | 6.9 L | 4,919 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
- Pinhoti 100162 km · 3,750 m D+ · October 31, 2026
- Javelina Jundred 100 miler158 km · 1,688 m D+ · October 31, 2026
- Javelina 100k97 km · 1,053 m D+ · October 31, 2026
- Mamba 100161 km · 143 m D+ · November 6, 2026
- Tunnel Hill 5081 km · 182 m D+ · November 7, 2026
- Tunnel Hill 100161 km · 355 m D+ · November 7, 2026
- Rio Del Lago161 km · 2,697 m D+ · November 7, 2026
- Mountain Masochist 5081 km · 2,311 m D+ · November 7, 2026
- Looking Glass 100K98 km · 3,190 m D+ · November 14, 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 — Mountain Masochist 100k
Weather for Mountain Masochist 100k
Section-by-section forecasts for Mountain Masochist 100k, calculated at the estimated passing time: feels-like temperature, rain or snow, wind and thunderstorms. Three models — AROME (Météo-France), ICON (DWD) and ECMWF IFS — served from the finest to the farthest-reaching.
Forecasts for a 600 UTMB Index runner, at their estimated passage time. Start Sat, 11/07 04:30 AM: Hazy sky, 43°F. Coldest: 36°F feels-like at Loop 1 (Aid) (Sat, 11/07 06:59 AM); warmest: 60°F at Reservoir 2 (Aid) (Sat, 11/07 12:18 PM). No notable rain forecast on the course. Gusts up to 30 mph at Start.
Forecast, not guaranteed: in the mountains a model describes a grid of several hundred meters, not the slope you're on.
Weather data: Météo-France (AROME), DWD (ICON), ECMWF (IFS) — CC BY 4.0, via Open-Meteo
Frequently asked questions
How many checkpoints?
Mountain Masochist 100k has 15 checkpoints: 12 aid stations, 2 water points, and 1 checkpoint with undocumented contents. Details are in the two tables above.
What's the longest segment without aid?
The one leading to Reservoir 2 (Aid): 10.9 km and 195 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?
Mountain Masochist 100k is 101 km long with 3268 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 13h31 for Mountain Masochist 100k.
What's the weather forecast?
Forecast published: 36°F feels-like at the coldest, 60°F at the warmest, no notable rain. RAVIT publishes the weather for Mountain Masochist 100k section by section: feels-like temperature, rain or snow, wind and storms, at the estimated passage time. Forecasts come from AROME (Météo-France), ICON (DWD) and ECMWF IFS, refreshed several times a day.
Want to stack the odds in your favor for Mountain Masochist 100k?
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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