Boise Marathon

Boise, ID, USA · June 20, 2027

58°·76° high·Breezy·Dry

Weather

Race Day Weather

58°at start

81° high

Breezy

Dry

Warming up, mixed wind challenges

Runners will face a temperature rise from 58°F at the start to 72°F by race end, paired with a light average humidity of 36%. A headwind will impact efforts from miles 1-4, 11-17, and 24-26, making pacing adjustments necessary on these stretches. With a tailwind from miles 5-10 and 18-23, runners should capitalize on faster paces during those segments.

Race day forecast available in 215 days

4 AM

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

2 PM

3 PM

Pre-raceRace windowPost-race

Pace Calculator

Distance: 26.2mi

Target Finish Time

0:00:00

HH:MM:SS

Pace

—

Weather Adj.

—

Common Goals:

Get forecast alerts for Boise Marathon

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

Race Info

One leg of SoleKIDs' 'Boise Four' race series, run every June from Payette Brewing Company in downtown Boise, Idaho. The early 6:04 a.m. start is set specifically to beat the summer heat on a course that is not USATF certified. Distinct from the separate, Boston-qualifying 'Onward Shay! Boise Marathon,' held each October by a different organizer. Source

Website

FAQ

When is the 2027 Boise Marathon?

The 2027 Boise Marathon will be held on Sunday June 20, 2027.

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 2027 Boise Marathon?

The forecast calls for a high of 88°F and a low of 58°F with a 1% chance of rain.

Historical Weather

Based on 3 years of data

Avg Temp

70°F

L:57° H:72°

RunScore

Conditions

Rain Freq

33%

1 of 3 yrs

Wind7mph

Dew43°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2026 Boise Marathon Partly cloudy throughout the day with rain in the morning and afternoon. 2026	63°/70°	Light	57°
2025 Boise Marathon Clear conditions throughout the day. 2025	45°/57°	-	35°
2024 Boise Marathon Clear conditions throughout the day. 2024	62°/89°	-	39°

More ID Races

Boise Half

2026-11-14 · 21.100km · Boise, ID, USA

Famous Idaho Potato Marathon

2027-05-15 · 42.200km · Boise, ID, USA

Mesa Falls Marathon

2027-07-17 · 42.200km · Ashton, ID, USA

Idaho Falls Marathon

2027-07-24 · 42.200km · Idaho Falls, ID, USA

Pocatello Marathon

2027-09-04 · 42.200km · Pocatello, ID, USA

Hayden Lake Marathon

2027-10-09 · 42.200km · Hayden, ID, USA