Idaho Falls Marathon

Idaho Falls, ID, USA · July 24, 2027

59°·78° high·Light·Dry

Weather

Race Day Weather

59°at start

80° high

Light

Dry

Warm finish, light winds

Runners will face a temperature rise from 59°F at the start to 79°F by the end. Light winds from the S will provide minimal impact, while humidity remains at a comfortable 40%. As temperatures climb, it’s crucial to start conservatively and focus on hydration, especially in the later miles.

Race day forecast available in 316 days

4 AM

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

2 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 Idaho Falls 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

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.

Website

Course Map

FAQ

When is the 2027 Idaho Falls Marathon?

The 2027 Idaho Falls Marathon will be held on Saturday July 24, 2027.

What will the weather be like for the 2027 Idaho Falls Marathon?

The forecast calls for a high of 86°F and a low of 57°F with a 2% chance of rain.

Historical Weather

Based on 12 years of data

Avg Temp

82°F

L:54° H:82°

RunScore

Conditions

Rain Freq

1 of 12 yrs

Wind10mph

Dew47°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2026 Idaho Falls Marathon Clear conditions throughout the day. 2026	59°/94°	-	54°
2025 Idaho Falls Marathon Clear conditions throughout the day. 2025	45°/79°	-	38°
2024 Idaho Falls Marathon Partly cloudy throughout the day with late afternoon rain. 2024	51°/82°	-	48°
2023 Idaho Falls Marathon Clear conditions throughout the day. 2023	54°/84°	-	53°
2022 Idaho Falls Marathon Clear conditions throughout the day. 2022	53°/87°	-	50°
2021 Idaho Falls Marathon Partly cloudy throughout the day with rain clearing later. 2021	63°/76°	Moderate	62°
2019 Idaho Falls Marathon Partly cloudy throughout the day with late afternoon rain. 2019	65°/75°	-	51°
2018 Idaho Falls Marathon Partly cloudy throughout the day. 2018	54°/79°	-	48°
2017 Idaho Falls Marathon Clear conditions throughout the day. 2017	50°/83°	-	52°
2016 Idaho Falls Marathon Clear conditions throughout the day. 2016	57°/86°	-	45°
2015 Idaho Falls Marathon Clear conditions throughout the day. 2015	46°/81°	-	46°
2014 Idaho Falls Marathon Clear conditions throughout the day. 2014	55°/82°	-	39°

More ID Races

Boise Half

2026-11-14 · Boise, ID, USA

Famous Idaho Potato Marathon

2027-05-15 · Boise, ID, USA

Pocatello Marathon

2026-09-05 · Pocatello, ID, USA

Hayden Lake Marathon

2026-10-10 · Hayden, ID, USA

City of Trees Marathon

2026-10-10 · Boise, ID, USA

Idaho Running Day Marathon

2026-10-17 · Boise, ID, USA