GO! St. Louis Marathon

St. Louis, MO, USA • April 11, 2026

Race Day Weather

49°

67° high

Breezy

Dry

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

A cool 49°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 67°F by later miles, so expect fading conditions as the race progresses. Moderate winds around 12 mph may affect pacing on open sections of the course.

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Pre-raceRace windowPost-race

Pace Calculator

Distance: 26.2mi

Target Finish Time

0:00:00

HH:MM:SS

Pace

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Weather Adj.

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Common Goals:

Discover the excitement of the Greater St. Louis Marathon, set to take the city by storm in April. This not-to-be-missed event promises a weekend filled with new courses, iconic landmarks, and vibrant celebrations, including the first-ever National Running Club Championships & Rally. Source

Course Map

FAQ

When is the 2026 GO! St. Louis Marathon?

The 2026 GO! St. Louis Marathon will be held on Saturday April 11, 2026.

Is the GO! St. Louis Marathon a Boston Marathon Qualifier?

Yes, the GO! St. Louis Marathon is an official Boston Marathon qualifier.

What is the time limit for the GO! St. Louis Marathon?

The time limit for the GO! St. Louis Marathon is 6.5 hours.

Historical Weather

Based on 24 years of data

Avg Temp

64°F

L:49° H:64°

RunScore

Conditions

Rain Freq

21%

5 of 24 yrs

Wind11mph

Dew45°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 GO! St. Louis Marathon Partly cloudy throughout the day. 2025	54°/61°	-	45°
2024 GO! St. Louis Marathon Partly cloudy throughout the day with rain. 2024	65°/76°	Light	60°
2023 GO! St. Louis Marathon Clear conditions throughout the day. 2023	39°/63°	-	36°
2022 GO! St. Louis Marathon Partly cloudy throughout the day. 2022	40°/65°	-	37°
2021 GO! St. Louis Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2021	57°/60°	Light	54°
2020 GO! St. Louis Marathon Partly cloudy throughout the day with afternoon rain. 2020	69°/74°	Light	65°
2020 GO! St. Louis Marathon Partly cloudy throughout the day with rain. 2020	58°/71°	-	57°
2019 GO! St. Louis Marathon Partly cloudy throughout the day with rain. 2019	56°/75°	-	56°
2018 GO! St. Louis Marathon Clearing in the afternoon. 2018	25°/36°	-	12°
2017 GO! St. Louis Marathon Partly cloudy throughout the day. 2017	63°/79°	-	52°
2016 GO! St. Louis Marathon Partly cloudy throughout the day. 2016	31°/44°	-	16°
2015 GO! St. Louis Marathon Partly cloudy throughout the day. 2015	43°/62°	-	37°
2014 GO! St. Louis Marathon Partly cloudy throughout the day. 2014	39°/56°	-	34°
2013 GO! St. Louis Marathon Partly cloudy throughout the day with late afternoon rain. 2013	54°/75°	-	46°
2012 GO! St. Louis Marathon Partly cloudy throughout the day with late afternoon rain. 2012	68°/76°	-	59°
2011 GO! St. Louis Marathon Partly cloudy throughout the day. 2011	71°/87°	-	61°
2010 GO! St. Louis Marathon Partly cloudy throughout the day. 2010	53°/77°	-	43°
2009 GO! St. Louis Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2009	59°/61°	Light	57°
2008 GO! St. Louis Marathon Partly cloudy throughout the day. 2008	41°/62°	-	42°
2007 GO! St. Louis Marathon Becoming cloudy in the afternoon. 2007	35°/55°	-	31°
2006 GO! St. Louis Marathon Partly cloudy throughout the day. 2006	34°/55°	-	29°
2005 GO! St. Louis Marathon Partly cloudy throughout the day. 2005	58°/79°	-	58°
2004 GO! St. Louis Marathon Clear conditions throughout the day. 2004	38°/52°	-	29°
2003 GO! St. Louis Marathon Cloudy skies throughout the day with a chance of rain or snow throughout the day. 2003	35°/38°	Light	32°