The 2025 event has concluded.

Idaho Falls Marathon

Idaho Falls, ID, USA • July 26, 2025
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Race Day Weather

clear-day
45°
79° high
Breezy
Dry

Cool start — fast day potential, big temp swing, moderate wind

A cool 45°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 79°F by later miles, so expect fading conditions as the race progresses. Moderate winds around 13 mph may affect pacing on open sections of the course.

clear-night9
clear-night8
clear-night8
clear-day9
clear-day9
clear-day9
clear-day9
clear-day7
clear-day8
clear-day8
clear-day7
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Course Map

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When is the 2025 Idaho Falls Marathon?

The 2025 Idaho Falls Marathon will be held on Saturday July 26, 2025.

Historical Weather

Based on 10 years of data
Avg Temp
81°F
L:55° H:82°
RunScore
7
Conditions
Rain Freq
10%
1 of 10 yrs
Wind10mph
Dew48°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore

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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You Need an Account For That

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