The 2023 event has concluded.

Grand Lake Marathon

Celina, OH, USA • September 23, 2023

Race Day Weather

46°

76° high

Breezy

Dry

Cool start, warming trend

Runners will face a temperature increase from 46°F at the start to 74°F by race's end, with humidity averaging 64%. Winds will be light at 11 mph from the east-northeast, with occasional gusts up to 22 mph. Runners should start conservatively to adjust for rising temperatures and maintain hydration throughout.

5 AM

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

Course Map

FAQ

When is the 2023 Grand Lake Marathon?

The 2023 Grand Lake Marathon will be held on Saturday September 23, 2023.

Historical Weather

Based on 8 years of data

Avg Temp

75°F

L:57° H:75°

RunScore

Conditions

Rain Freq

25%

2 of 8 yrs

Wind8mph

Dew54°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2023 Grand Lake Marathon Clear conditions throughout the day. 2023	49°/74°	-	47°
2023 Grand Lake Marathon Partly cloudy throughout the day. 2023	53°/69°	-	53°
2022 Grand Lake Marathon Partly cloudy throughout the day. 2022	61°/81°	-	59°
2019 Grand Lake Marathon Partly cloudy throughout the day with rain clearing later. 2019	64°/80°	Light	64°
2018 Grand Lake Marathon Partly cloudy throughout the day. 2018	46°/63°	-	45°
2017 Grand Lake Marathon Clear conditions throughout the day. 2017	63°/90°	-	63°
2016 Grand Lake Marathon Partly cloudy throughout the day. 2016	64°/73°	-	65°
2015 Grand Lake Marathon Partly cloudy throughout the day with morning rain. 2015	60°/74°	Light	55°