The 2026 Beaverhead Marathon has concluded.Share your finish

Beaverhead Marathon

Race complete
Dillon, MT, USA · May 23, 2026·
clear-day53°·67° high·Breezy·Dry
8
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Beaverhead Marathon race day weather

clear-day
53°at start
67° high
Breezy
Dry
Goal
0:00:00

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.

partly-cloudy-day10
clear-day9
clear-day10
Start
clear-day9
clear-day8
clear-day8
clear-day7
Finish
partly-cloudy-day6
clear-day6
Cutoff
partly-cloudy-day6
partly-cloudy-day6

Pace Calculator

26.2mi
0:00:00
HH:MM:SS
Pace
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Common Goals:

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Beaverhead Marathon route and elevation

The Beaverhead Marathon course has about 420 ft (128 m) of climbing and 423 ft (129 m) of descent, and finishes near the elevation it starts. It is hillier than 69% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. It has no steep miles: no mile climbs more than 50 ft (15 m).

Biggest climbs

  • Miles 0.4 to 3.6: climbs about 85 ft (26 m).
  • Miles 4.3 to 9: climbs about 95 ft (28 m).
  • Miles 12.3 to 17.8: climbs about 205 ft (63 m).

What the hills cost

  • 3:30 on a flat course is about 3:31 here (1 minute slower).
  • 4:00 on a flat course is about 4:02 here (2 minutes slower).
  • 4:30 on a flat course is about 4:32 here (2 minutes slower).

Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.

Even-effort splits for a 3:30, 4:00 or 4:30 finish
The Beaverhead Marathon mile splits at even effort for three finish times, with each mile's climb and descent
MileClimbDescent3:304:004:30
146 ft1 ft8:199:3010:42
213 ft8 ft8:009:0810:16
318 ft2 ft8:049:1510:24
429 ft31 ft7:579:0410:12
518 ft9 ft8:029:1110:20
618 ft2 ft8:059:1410:24
730 ft1 ft8:119:2210:31
823 ft1 ft8:089:1810:28
922 ft13 ft8:029:1010:19
109 ft18 ft7:559:0310:10
110 ft22 ft7:518:5910:07
123 ft12 ft7:569:0310:11
1338 ft6 ft8:139:2310:34
1431 ft0 ft8:129:2310:33
1538 ft7 ft8:129:2310:33
1643 ft0 ft8:199:2910:41
1733 ft0 ft8:139:2410:34
1833 ft5 ft8:119:2110:31
193 ft36 ft7:508:5710:04
200 ft46 ft7:468:539:59
211 ft39 ft7:488:5510:02
2210 ft31 ft7:528:5910:07
2328 ft36 ft7:559:0310:11
2410 ft61 ft7:468:529:58
258 ft45 ft7:488:5510:03
260 ft74 ft7:408:469:52
Last 0.22 ft3 ft1:452:002:14

Explore the Beaverhead Marathon course with the weather and your pace along the route, or compare it with other races.

About the Beaverhead Marathon

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.

Race weekend

Saturday, May 23
9:00 AMMarathon (26.2 mi)
10:00 AMHalf Marathon (13.1 mi)

Beaverhead Marathon 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.

What is the elevation gain of the Beaverhead Marathon?

The Beaverhead Marathon course has about 420 ft (128 m) of climbing and 423 ft (129 m) of descent, and finishes near the elevation it starts. It is hillier than 69% of the marathon courses racecast.io has mapped, measured by what the hills cost in time.

Is the Beaverhead Marathon flat?

Yes. It has about 16 ft (5 m) of climbing per mile, and no mile climbs more than 50 ft (15 m). 4:00 on a flat course is about 4:02 here (2 minutes slower).

What is the weather usually like for the Beaverhead Marathon?

Over the 8 years racecast.io has race-day weather for (2018 to 2026), it averaged 46°F at the start and 57°F by a typical finish. Rain fell during race hours in 1 of those years (2019).

What was the hottest Beaverhead Marathon?

Of the 8 years on record, 2026 was the warmest, reaching 67°F during race hours. The coldest start was 2019, at 40°F.

What was the windiest Beaverhead Marathon?

Of the 8 years on record, 2018 was the windiest, with wind averaging 24 mph during race hours. The calmest was 2025, at 3 mph.

Beaverhead Marathon weather history

Based on 8 years of data
Avg Temp
52°F
L:46° H:57°
RunScore
9
Conditions
Rain Freq
13%
1 of 8 yrs
Wind9mph
Dew35°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-day
53°/67°-
8
2025
clear-day
47°/61°-
9
2024
clear-day
49°/67°-
8
2023
cloudy
48°/56°-
9
2022
cloudy
45°/54°-
9
2021
clear-day
49°/61°-
9
2019
rain
40°/46°Light
10
2018
clear-day
41°/46°-
8