Idaho Falls Marathon

Idaho Falls, ID, USA • July 25, 2026
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Race Day Weather

clear-day
55°
87° high
Breezy
Dry

Warming day, steady winds

Runners will face a significant temperature increase from 55°F at the start to a high of 84°F. Winds will come from the SW at 10 mph with gusts reaching 31 mph. With humidity at 53%, it is advisable for runners to pace themselves conservatively and stay hydrated, particularly as temperatures climb.

Race day forecast available in 120 days
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Pace Calculator

Distance: 26.2mi
0:00:00
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Pace
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Weather Adj.
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Common Goals:

The Idaho Falls Marathon offers a scenic and fast course, beginning and ending at Snake River Landing. The marathon course runs the first half west through beautiful southeast Idaho farm country and back through historic New Sweden. The marathon returns to the start point to continue clockwise around the Snake River Greenbelt for the remaining half and finishes where you started. Source

Area Map

Course Map

Course Map Unavailable

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

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FAQ

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When is the 2026 Idaho Falls Marathon?

The 2026 Idaho Falls Marathon will be held on Saturday July 25, 2026.

Historical Weather

Based on 11 years of data
Avg Temp
81°F
L:54° H:81°
RunScore
7
Conditions
Rain Freq
9%
1 of 11 yrs
Wind10mph
Dew46°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore

2025 Idaho Falls Marathon

Clear conditions throughout the day.

2025
clear-night
45°/79°-
8

2024 Idaho Falls Marathon

Partly cloudy throughout the day with late afternoon rain.

2024
clear-night
51°/82°-
8

2023 Idaho Falls Marathon

Clear conditions throughout the day.

2023
clear-night
54°/84°-
8

2022 Idaho Falls Marathon

Clear conditions throughout the day.

2022
clear-night
53°/87°-
8

2021 Idaho Falls Marathon

Partly cloudy throughout the day with rain clearing later.

2021
rain
63°/76°Moderate
6

2019 Idaho Falls Marathon

Partly cloudy throughout the day with late afternoon rain.

2019
cloudy
65°/75°-
8

2018 Idaho Falls Marathon

Partly cloudy throughout the day.

2018
clear-night
54°/79°-
8

2017 Idaho Falls Marathon

Clear conditions throughout the day.

2017
clear-night
50°/83°-
8

2016 Idaho Falls Marathon

Clear conditions throughout the day.

2016
clear-night
57°/86°-
8

2015 Idaho Falls Marathon

Clear conditions throughout the day.

2015
clear-night
46°/81°-
8

2014 Idaho Falls Marathon

Clear conditions throughout the day.

2014
clear-night
55°/82°-
7
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