Bob Marshall Trail Half Marathon, 50K, and 10K
Seeley Lake, MT, USA · July 18, 2026
Race Day Weather
68°at start
85° high
Breezy
Dry
Warm start, big temp swing
Starting at 68°F, heat will be a factor from the gun — go out conservative and stay on top of hydration. Temps will climb significantly to 85°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.
Race day forecast available in 73 days
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FAQ
When is the 2026 Bob Marshall Trail Half Marathon, 50K, and 10K?
The 2026 Bob Marshall Trail Half Marathon, 50K, and 10K will be held on Saturday July 18, 2026.
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 9 hours.
What will the weather be like for the 2026 Bob Marshall Trail Half Marathon, 50K, and 10K?
The forecast calls for a high of 85°F and a low of 55°F with a 0% chance of rain.