IronHorse Marathon

Riceville, IA, USA · May 1, 2027
partly-cloudy-day47°·57° high·Breezy·Dry
7
Register

Race Day Weather

partly-cloudy-day
47°at start
59° high
Breezy
Dry

Cool start, mild finish

Runners will face a temperature range from 47°F at the start to a mild 59°F later in the race. Winds will be from the WSW at 15 mph, with gusts up to 27 mph, creating a headwind effect. Given the humidity at 65%, runners should consider starting conservatively and stay hydrated throughout.

Race day forecast available in 171 days
partly-cloudy-night8
partly-cloudy-night8
partly-cloudy-night7
partly-cloudy-day7
partly-cloudy-day7
partly-cloudy-day7
partly-cloudy-day7
partly-cloudy-day7
cloudy8
partly-cloudy-day7
partly-cloudy-day7
partly-cloudy-day7

Pace Calculator

Distance: 26.2mi
0:00:00
HH:MM:SS
Pace
—
Weather Adj.
—
Common Goals:

Get forecast alerts for IronHorse 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 IronHorse Races include a Full Marathon, Half Marathon, 10K and 5K Run. All are USATF Sanctioned. The Full Marathon, Half Marathon and 5K are USATF Certified. The Full Marathon takes place on the Wapsi-Great Western Line (WGWL) Trail located in Riceville, Iowa and the Shooting Star Trail in Minnesota. The Half Marathon, 10K and 5K take place on the WGWL Trail. The WGWL Trail has a Northern Branch and a Southern Branch. The races take place on the Rails-to-Trails recognized paved and concrete laid Northern Branch. The Iowan WGWL Trail is the first and official interstate trail connecting to Minnesota’s Shooting Star Trail. Source

FAQ

When is the 2027 IronHorse Marathon?

The 2027 IronHorse Marathon will be held on Saturday May 1, 2027.

Is the IronHorse Marathon a Boston Marathon Qualifier?

Yes, the IronHorse Marathon is an official Boston Marathon qualifier.

What is the time limit for the IronHorse Marathon?

The time limit for the IronHorse Marathon is 6 hours.

What will the weather be like for the 2027 IronHorse Marathon?

The forecast calls for a high of 64°F and a low of 45°F with a 14% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 6 years of data
Avg Temp
62°F
L:47° H:62°
RunScore
7
Conditions
Rain Freq
33%
2 of 6 yrs
Wind12mph
Dew43°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-day
37°/55°-
8
2025
cloudy
43°/53°-
8
2024
cloudy
47°/51°Light
6
2023
rain
56°/63°Light
6
2022
clear-day
46°/65°-
9
2021
clear-day
54°/83°-
6