Boise Marathon

Boise, ID, USA · June 20, 2026
clear-day60°·77° high·Breezy·Dry
8
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Weather
Course
Race Info
FAQ
History

Race Day Weather

clear-day
60°at start
80° high
Breezy
Dry

Warming trend, steady winds

Runners will face a temperature rise from 56°F to a peak of 79°F. Wind will be from the WSW at 10 mph, with gusts reaching 24 mph, providing a slight headwind. With humidity at 41% and a dew point of 42°F, hydration will be key, especially as temperatures climb. Starting conservatively is advised to manage the heat.

Race day forecast available in 31 days
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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?

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 81°F and a low of 56°F with a 0% 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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