Grand Rapids Marathon

Grand Rapids, MI, USA · October 18, 2026

44°·58° high·Breezy·Dry

Weather

Race Day Weather

44°at start

58° high

Breezy

Dry

Cool start, steady warming trend

Runners will face temperatures starting at 44°F, gradually rising to 58°F. Wind will be light at 10 mph from the SW, with humidity around 70%. Given the warming trend, runners should start conservatively and stay hydrated, particularly as they approach the warmer temperatures.

Race day forecast available in 5 days

6 AM

7 AM

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

2 PM

3 PM

4 PM

Pre-raceRace windowPost-race

Get forecast alerts for Grand Rapids 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 Grand Rapids Marathon is a 26.2-mile race held every October in Grand Rapids, Michigan, since 2004. The course is USATF certified, flat and fast, and is a Boston Marathon qualifier. Metro Health became title sponsor in 2008; the hospital system renamed itself University of Michigan Health-West in 2021, and the race is now presented as the University of Michigan Health-West Grand Rapids Marathon. The route tours downtown Grand Rapids before finishing through the trails of Millennium Park. Wikipedia

Website

Course Map

FAQ

When is the 2026 Grand Rapids Marathon?

The 2026 Grand Rapids Marathon will be held on Sunday October 18, 2026.

Is the Grand Rapids Marathon a Boston Marathon Qualifier?

Yes, the Grand Rapids Marathon is an official Boston Marathon qualifier.

What will the weather be like for the 2026 Grand Rapids Marathon?

The forecast calls for a high of 60°F and a low of 44°F with a 12% chance of rain.

Historical Weather

Based on 20 years of data

Avg Temp

57°F

L:42° H:58°

RunScore

Conditions

Rain Freq

25%

5 of 20 yrs

Wind13mph

Dew39°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Grand Rapids Marathon Becoming cloudy in the afternoon with a chance of rain throughout the day. 2025	51°/57°	Light	52°
2024 Grand Rapids Marathon Clear conditions throughout the day. 2024	51°/74°	-	47°
2023 Grand Rapids Marathon Partly cloudy throughout the day with late afternoon rain. 2023	45°/56°	-	42°
2022 Grand Rapids Marathon Cloudy skies throughout the day with rain. 2022	41°/52°	Light	39°
2021 Grand Rapids Marathon Partly cloudy throughout the day. 2021	46°/62°	-	40°
2020 Grand Rapids Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2020	56°/66°	Light	57°
2019 Grand Rapids Marathon Partly cloudy throughout the day with early morning rain. 2019	51°/65°	-	50°
2018 Grand Rapids Marathon Partly cloudy throughout the day. 2018	37°/43°	-	29°
2017 Grand Rapids Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2017	54°/67°	Light	56°
2016 Grand Rapids Marathon Partly cloudy throughout the day. 2016	38°/66°	-	44°
2015 Grand Rapids Marathon Partly cloudy throughout the day. 2015	33°/52°	-	28°
2014 Grand Rapids Marathon Partly cloudy throughout the day. 2014	30°/53°	-	35°
2013 Grand Rapids Marathon Partly cloudy throughout the day with rain. 2013	38°/55°	-	38°
2012 Grand Rapids Marathon Partly cloudy throughout the day. 2012	39°/61°	-	42°
2011 Grand Rapids Marathon Partly cloudy throughout the day with rain clearing later. 2011	49°/57°	Light	43°
2010 Grand Rapids Marathon Partly cloudy throughout the day. 2010	41°/61°	-	37°
2009 Grand Rapids Marathon Partly cloudy throughout the day. 2009	28°/49°	-	32°
2008 Grand Rapids Marathon Partly cloudy throughout the day. 2008	41°/60°	-	35°
2007 Grand Rapids Marathon Clear conditions throughout the day. 2007	33°/54°	-	32°
2006 Grand Rapids Marathon Partly cloudy throughout the day. 2006	38°/48°	-	26°

More MI Races

Waugoshance Trail Marathon

2027-07-10 · 40.700km · Mackinaw City, MI, USA

Grand Island Trail Marathon

2027-07-31 · 43.450km · Munising, MI, USA

Amway River Bank Run

2027-05-08 · Grand Rapids, MI, USA

MISH Waterfront Marathon

2027-06-05 · Gladstone, MI, USA

Charlevoix Marathon

2027-06-19 · 42.200km · Charlevoix, MI, USA

Millennium Meadows Marathon

2027-08-29 · 42.200km · Grand Rapids, MI, USA