Boise Marathon

Boise, ID, USA · June 20, 2026
partly-cloudy-day67°·81° high·Breezy·Dry
8
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Weather
Course
Race Info
FAQ
History

Race Day Weather

partly-cloudy-day
67°at start
86° high
Breezy
Dry

Warm start, big temp swing

Starting at 67°F, heat will be a factor from the gun — go out conservative and stay on top of hydration. Temps will climb significantly to 86°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.

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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

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Course Map

Course Map Unavailable

We don't have course map data for Boise Marathon yet. If you have a GPX file (or other format) for this race, we'd love to add it!

FAQ

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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?

No, the Boise Marathon is NOT a 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 66°F with a 8% 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 Boise Marathon

Clear conditions throughout the day.

2025
clear-day
45°/60°-
8

2024 Boise Marathon

Clear conditions throughout the day.

2024
clear-day
61°/92°-
8

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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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