Boise Marathon

Boise, ID, USA · June 20, 2026
partly-cloudy-day58°·77° high·Breezy·Dry
8
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Race Day Weather

partly-cloudy-day
58°at start
81° high
Breezy
Dry

Warming trend, moderate wind

Runners will face a temperature rise from 58°F at the start to 78°F by the finish, with a gentle wind from the SW at 9 mph. Humidity is low at 35%, ensuring comfortable conditions. As temperatures climb, it's advisable for runners to start conservatively and adjust their pace accordingly.

Race day forecast available in 19 days
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We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

Race Info

Welcome to the Boise Marathon. The Boise Marathon will offer the summer option for our marathon series. June 21st promises to be one of the longest Boise days. Sunrise is at 6.04 a.m. and while Sunset is scheduled 9.30 p.m., you know that Boise sun can hang in the sky until late into the evening. We can't imagine a more perfect day to run our Summer Marathon. Source

Area Map

Course Map

FAQ

When is the 2026 Boise Marathon?

The 2026 Boise Marathon will be held on Saturday June 20, 2026.

Is the Boise Marathon a Boston Marathon Qualifier?

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

What is the time limit for the Boise Marathon?

The time limit for the Boise Marathon is 6 hours.

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

The forecast calls for a high of 88°F and a low of 58°F with a 2% chance of rain.

Historical Weather

Based on 2 years of data
Avg Temp
76°F
L:53° H:76°
RunScore
8
Conditions
Rain Freq
0%
0 of 2 yrs
Wind10mph
Dew34°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2025
clear-day
45°/60°-
8
2024
clear-day
61°/92°-
8