Boise Marathon
Boise, ID, USA • June 20, 2026
Race Day Weather
56°
80° high
Breezy
Dry
Warming conditions, steady winds
Runners will face temperatures rising from 56°F at the start to a peak of 79°F. Winds will be light at 10 mph from the WSW, with gusts up to 24 mph. With humidity at a comfortable 41%, pacing strategies should adjust as temperatures climb; starting conservatively is advised.
Race day forecast available in 60 days
Pre-raceRace windowPost-race
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
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 81°F and a low of 56°F with a 0% chance of rain.