Montana Marathon

Billings, MT, USASeptember 20, 2026
Register

Race Day Weather

partly-cloudy-day
51°
70° high
Breezy
Dry

Comfortable temps, big temp swing

Mild 51°F temps at gun time mean comfortable early miles without overheating risk. Temps will climb significantly to 70°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 174 days
partly-cloudy-night8
partly-cloudy-night8
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day8

Pace Calculator

Distance: 26.2mi
0:00:00
HH:MM:SS
Pace
Weather Adj.
Common Goals:
Area Map

Course Map

FAQ

When is the 2026 Montana Marathon?

The 2026 Montana Marathon will be held on Sunday September 20, 2026.

Is the Montana Marathon a Boston Marathon Qualifier?

Yes, the Montana Marathon is an official Boston Marathon qualifier.

Historical Weather

Based on 12 years of data
Avg Temp
70°F
L:52° H:71°
RunScore
7
Conditions
Rain Freq
17%
2 of 12 yrs
Wind13mph
Dew41°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
partly-cloudy-day
65°/81°-
7
2024
partly-cloudy-day
44°/51°Light
7
2023
partly-cloudy-day
55°/81°-
8
2022
partly-cloudy-day
36°/56°-
8
2021
partly-cloudy-day
51°/60°Light
8
2020
partly-cloudy-day
54°/71°-
7
2019
partly-cloudy-day
65°/92°-
8
2018
partly-cloudy-day
52°/71°-
8
2017
partly-cloudy-day
40°/58°-
8
2016
partly-cloudy-day
62°/79°-
8
2015
partly-cloudy-day
54°/80°-
7
2014
clear-day
47°/72°-
8