Bob Marshall Trail Half Marathon, 50K, and 10K
Seeley Lake, MT, USA · July 17, 2027·
Race Day Weather
71°at start
84° high
Light
Dry
Warm start, warming through the race
A warm 71°F start means heat management is critical — consider dialing back your goal pace by 10-20 sec/mi. Temperatures rising to 84°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.
Race day forecast available in 274 days
Pre-raceRace windowPost-race
Get forecast alerts for Bob Marshall Trail Half Marathon, 50K, and 10K
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race weekend
Saturday, July 17
9:00 AM50K (31.1 mi)
9:00 AMHalf Marathon (13.1 mi)
5K (3.1 mi)
FAQ
When is the 2027 Bob Marshall Trail Half Marathon, 50K, and 10K?
The 2027 Bob Marshall Trail Half Marathon, 50K, and 10K will be held on Saturday July 17, 2027.
What is the time limit for the Bob Marshall Trail Half Marathon, 50K, and 10K?
The time limit for the Bob Marshall Trail Half Marathon, 50K, and 10K is 8 hours.
What will the weather be like for the 2027 Bob Marshall Trail Half Marathon, 50K, and 10K?
The forecast calls for a high of 86°F and a low of 55°F with a 1% chance of rain.
More MT Races
Whitefish Marathon
2027-05-22 · 42.200km · Whitefish, MT, USA
Missoula Marathon
2027-06-27 · 42.200km · Missoula, MT, USA
Madison Marathon (MT)
2027-07-10 · 42.200km · Ennis, MT, USA
Big Sky Marathon
2027-07-11 · 42.200km · Ennis, MT, USA
Snow Joke Half Marathon
2027-02-27 · 21.100km · Seeley Lake, MT, USA
Sorry 'Bout That Half Marathon
2027-01-16 · 21.100km · Polson, MT, USA