The 2026 Beaverhead Marathon has concluded.Share your finish

Beaverhead Marathon

Race complete
Dillon, MT, USA · May 23, 2026
clear-day53°·70° high·Windy·Dry
8
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Race Day Weather

clear-day
53°at start
74° high
Windy
Dry

Cool start, warming trend ahead

Runners will face a temperature climb from 46°F at the start to a warm 72°F by the finish. Winds will be a significant factor, with headwinds impacting early miles and crosswinds throughout, especially in miles 1-3 and 5-9. A tailwind will finally assist runners in miles 11-12 and 19-27, providing a welcome boost. Hydration will be crucial as temperatures rise; starting conservatively will help manage the heat later in the race.

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Distance: 26.2mi
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Race Info

The Beaverhead Marathon is an annual marathon and half marathon in Dillon, Montana, organized by the Montana Events Foundation (also branded Montana Running Company). Both races start and finish at Beaverhead Brewing Company in downtown Dillon. The marathon course is about one-third dirt and two-thirds pavement; the half marathon is entirely on pavement. The route passes through agricultural land with views of the Pioneer, Blacktail, Sweetwater, Highland, and Tobacco Root mountain ranges, at an elevation around 5,240 feet. First run in 2018, the race was cancelled in 2020 due to COVID-19 and has run every year since.

FAQ

When is the 2026 Beaverhead Marathon?

The 2026 Beaverhead Marathon will be held on Saturday May 23, 2026.

What is the time limit for the Beaverhead Marathon?

The time limit for the Beaverhead Marathon is 6 hours.

What will the weather be like for the 2026 Beaverhead Marathon?

The forecast calls for a high of 74°F and a low of 41°F with a 0% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 8 years of data
Avg Temp
58°F
L:47° H:59°
RunScore
8
Conditions
Rain Freq
25%
2 of 8 yrs
Wind13mph
Dew36°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-day
56°/62°Light
8
2025
clear-day
47°/65°-
9
2024
clear-day
49°/71°-
9
2023
cloudy
48°/57°-
7
2022
cloudy
45°/55°-
8
2021
clear-day
49°/66°-
8
2019
rain
40°/47°Light
8
2018
clear-day
41°/47°-
5