Broken Rock 50k 2026
Forecast published: 51°F feels-like at the coldest, 77°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 6 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 - Broken Rock 50k · 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 | Ropes Coursekm 7.2 | Start/Finish (Forrest Village)km 16.4 | Ropes Coursekm 23.6 | Start/Finish (Forrest Village)km 32.7 | Ropes Coursekm 39.9 | Start/Finish (Forrest Village)km 49.1 |
|---|---|---|---|---|---|---|
| Water | available | available | available | available | available | available |
| Brand products | available | available | available | available | available | available |
Elevation profile
The course and its aid stations
Broken Rock 50k: 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 6h12 to 4h02, and the aid-station stop budget from 0h14 to 0h05. 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 | 6h12 | 0h14 | — | 372 g | 4.3 L | 3,103 mg |
| 550 | 5h43 | 0h11 | — | 343 g | 4 L | 2,855 mg |
| 600 | 5h11 | 0h09 | — | 311 g | 3.6 L | 2,590 mg |
| 650 | 4h49 | 0h08 | — | 289 g | 3.4 L | 2,408 mg |
| 700 | 4h31 | 0h06 | — | 271 g | 3.2 L | 2,255 mg |
| 750 | 4h16 | 0h06 | — | 256 g | 3 L | 2,129 mg |
| 800 | 4h02 | 0h05 | — | 242 g | 2.8 L | 2,016 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
- Fort Collins - Marathon43 km · 1,162 m D+ · October 18, 2026
- Bridge Burner 35mile58 km · 1,616 m D+ · October 24, 2026
- Javelina Jackass 31k31 km · 322 m D+ · October 31, 2026
- Coldwater 50k52 km · 1,293 m D+ · November 1, 2026
- Lake Chabot 50K49 km · 1,896 m D+ · November 7, 2026
- Mt. Tam 50k48 km · 2,005 m D+ · November 7, 2026
- Red Rock Canyon 50k49 km · 988 m D+ · November 14, 2026
- HOKA Pacific Trails California by UTMB - 50K®52 km · 1,548 m D+ · November 14, 2026
- VHTRC Redeye 50K50 km · 1,027 m D+ · December 30, 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 — Broken Rock 50k
Weather for Broken Rock 50k
Section-by-section forecasts for Broken Rock 50k, 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, 10/10 07:30 AM: Clear sky, 57°F. Coldest: 51°F feels-like at Start (Sat, 10/10 07:30 AM); warmest: 77°F at Start/Finish (Forrest Village) (Sat, 10/10 12:40 PM). No notable rain forecast on the course. Gusts up to 25 mph at Start/Finish (Forrest Village).
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?
Broken Rock 50k has 6 checkpoints: 6 aid stations. Details are in the two tables above.
What's the longest segment without aid?
The one leading to Start/Finish (Forrest Village): 9.1 km and 223 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?
Broken Rock 50k is 49 km long with 1180 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 5h11 for Broken Rock 50k.
What's the weather forecast?
Forecast published: 51°F feels-like at the coldest, 77°F at the warmest, no notable rain. RAVIT publishes the weather for Broken Rock 50k 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 Broken Rock 50k?
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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