Bob Marshall Trail Half Marathon, 50K, and 10K

Seeley Lake, MT, USA · July 18, 2026
clear-day66°·86° high·Light·Dry
8
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Weather
Course
FAQ
History

Race Day Weather

clear-day
66°at start
86° high
Light
Dry

Warm up, hydrate early

Runners will face a temperature rise from 61°F at the start to a high of 86°F. With a light breeze from the WSW at 7 mph, humidity will remain low at 32%. Runners should start conservatively and increase hydration frequency to manage the warming conditions.

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clear-day8
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partly-cloudy-day7
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Race Info

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FAQ

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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 86°F and a low of 53°F with a 23% chance of rain.

Historical Weather

Based on 2 years of data
Avg Temp
86°F
L:60° H:87°
RunScore
6
Conditions
Rain Freq
0%
0 of 2 yrs
Wind12mph
Dew40°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore

2024 Bob Marshall Trail Half Marathon, 50K, and 10K

Clear conditions throughout the day.

2024
clear-day
53°/82°-
8

2023 Bob Marshall Trail Half Marathon, 50K, and 10K

Clear conditions throughout the day.

2023
clear-day
66°/91°-
6

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Free guidesMarathon Fueling Guide·Carb Loading Guide·Race Morning Guide·Race Day Gear Guide·Pacing Strategy Guide·Mental Strategy Guide

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