Belleville Main Street Marathon

Belleville, IL, USA · September 26, 2026

58°·75° high·Light·Dry

Weather

Race Day Weather

58°at start

77° high

Light

Dry

Warm afternoon, mild wind

Runners will face a temperature increase from 58°F to 76°F during the race, with average humidity at 66% and a dew point of 55°F. A mild wind from the NW at 7 mph will provide a slight tailwind. Runners should consider adjusting their pace and focusing on hydration as temperatures rise throughout the race.

Race day forecast available in 125 days

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

2 PM

3 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 Belleville Main Street 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 Belleville Main Street Marathon offers runners a unique experience through historic Belleville, Illinois, featuring America's longest Main Street and scenic paved trails. The full marathon is a USTAF-certified Boston Marathon qualifier, ideal for runners of all experience levels. Post-race festivities include local pizza, a special brew, and live music, all contributing to the event's festive atmosphere.

Website

Course Map

FAQ

When is the 2026 Belleville Main Street Marathon?

The 2026 Belleville Main Street Marathon will be held on Saturday September 26, 2026.

Is the Belleville Main Street Marathon a Boston Marathon Qualifier?

Yes, the Belleville Main Street Marathon is an official Boston Marathon qualifier.

What will the weather be like for the 2026 Belleville Main Street Marathon?

The forecast calls for a high of 80°F and a low of 59°F with a 11% chance of rain.

Historical Weather

Based on 9 years of data

Avg Temp

80°F

L:57° H:80°

RunScore

Conditions

Rain Freq

11%

1 of 9 yrs

Wind7mph

Dew57°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Belleville Main Street Marathon Clear conditions throughout the day. 2025	53°/85°	-	56°
2024 Belleville Main Street Marathon Partly cloudy throughout the day with rain clearing later. 2024	66°/76°	Light	62°
2023 Belleville Main Street Marathon Clear conditions throughout the day. 2023	63°/89°	-	65°
2022 Belleville Main Street Marathon Clear conditions throughout the day. 2022	53°/84°	-	57°
2021 Belleville Main Street Marathon Clear conditions throughout the day with early morning rain. 2021	51°/73°	-	51°
2019 Belleville Main Street Marathon Clearing in the afternoon. 2019	66°/78°	-	67°
2018 Belleville Main Street Marathon Partly cloudy throughout the day. 2018	51°/70°	-	46°
2017 Belleville Main Street Marathon Clear conditions throughout the day. 2017	48°/75°	-	44°
2016 Belleville Main Street Marathon Clear conditions throughout the day. 2016	65°/89°	-	68°

More IL Races

Last Chance BQ.2 Marathon (Geneva, IL)

2026-09-06 · Geneva, IL, USA

Fox Valley Marathon

2026-09-20 · St. Charles, IL, USA

Quad Cities Marathon

2026-09-27 · Moline, IL, USA

Des Plaines River Trail Marathon

2026-10-10 · Lincolnshire, IL, USA

Chicago Marathon

2026-10-11 · Chicago, IL, USA

Springfield Marathon

2026-11-07 · Springfield, IL, USA