Race day — the 2026 Famous Idaho Potato Marathon is underway.

Famous Idaho Potato Marathon

Race day
Race day · Gun in 8h 34m
partly-cloudy-day49°·60° high·Windy·Dry
8
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Race Day Weather

partly-cloudy-day
49°at start
60° high
Windy
Dry

Cool morning, steady wind

Runners will face a temperature range from 47°F to 61°F, with a cool start at 49°F. Winds from the NW at 14 mph will create a moderate headwind throughout. With humidity at a comfortable 42%, runners can maintain their pace but should remain aware of wind resistance when strategizing for their splits.

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clear-day7
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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

The Treasure Valley YMCA is proud to bring you the 48th annual YMCA Famous Idaho Potato Marathon and Fun Runs presented by the Idaho Potato Commisson. All of our races take place on the flat and scenic Boise Greenbelt starting and finishing at the The Morrison Center. Source

Area Map

Course Map

FAQ

When is the 2026 Famous Idaho Potato Marathon?

The 2026 Famous Idaho Potato Marathon will be held on Saturday May 16, 2026.

Is the Famous Idaho Potato Marathon a Boston Marathon Qualifier?

Yes, the Famous Idaho Potato Marathon is an official Boston Marathon qualifier.

What is the time limit for the Famous Idaho Potato Marathon?

The time limit for the Famous Idaho Potato Marathon is 8 hours.

What will the weather be like for the 2026 Famous Idaho Potato Marathon?

The forecast calls for a high of 60°F and a low of 47°F with a 2% chance of rain.

Historical Weather

Based on 26 years of data
Avg Temp
72°F
L:52° H:72°
RunScore
8
Conditions
Rain Freq
8%
2 of 26 yrs
Wind10mph
Dew35°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2025
cloudy
51°/54°Light
7
2024
clear-day
43°/71°-
8
2023
clear-day
53°/77°-
8
2022
cloudy
51°/67°Light
8
2021
clear-night
62°/83°-
8
2020
partly-cloudy-day
72°/97°-
6
2019
clear-day
45°/63°-
9
2018
clear-day
53°/77°-
8
2017
partly-cloudy-day
52°/74°-
8
2016
cloudy
49°/58°-
8
2015
clear-day
66°/77°-
8
2014
clear-day
49°/76°-
8
2013
clear-day
46°/65°-
8
2012
clear-day
44°/71°-
8
2011
cloudy
64°/84°-
8
2010
clear-day
53°/77°-
8
2009
clear-day
45°/76°-
8
2009
clear-day
36°/56°-
6
2008
clear-day
56°/89°-
8
2007
clear-day
57°/78°-
8
2006
partly-cloudy-day
59°/74°-
8
2005
partly-cloudy-day
56°/73°-
8
2004
partly-cloudy-day
41°/56°-
8
2003
cloudy
56°/78°-
8
2002
clear-day
37°/62°-
8
2001
cloudy
53°/61°-
7