Race day — the 2026 Belleville Main Street Half Marathon is underway.

Belleville Main Street Half Marathon

Race day
Race day·
cloudy62°·63° high·Calm·Dry
6
Register

Race Day Weather

cloudy
62°at start
70° high
Light
Dry
Your goal
0:00:00

Comfortable temps

Starting at 62°F, heat will be a factor from the gun — go out conservative and stay on top of hydration. Temperatures rising to 70°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing. Moderate humidity at 72% is worth noting for effort level, especially in later miles.

cloudy6
cloudy7
partly-cloudy-day7
cloudy6
cloudy6
cloudy6
partly-cloudy-day5
cloudy5

Pace Calculator

Distance: 13.1mi
0:00:00
HH:MM:SS
Pace
—
Weather Adj.
—
Common Goals:

Get forecast alerts for Belleville Main Street Half Marathon

We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

Race Plan

Get your personalized Belleville Main Street Half Marathon race plan

True Effort pacing, weather-adjusted mile splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.

Race Conditions
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

Race Info

The Belleville Main Street Half Marathon covers 13.1 miles entirely on Belleville, Illinois city streets, including America's longest Main Street, starting and finishing near Public Square in downtown Belleville. The course turns around on 95th Street, marked by a yellow feather flag, roughly halfway through the route.

Race weekend

Saturday, September 26
7:00 AMMarathon (26.2 mi)
7:00 AMHalf Marathon (13.1 mi)

FAQ

When is the 2026 Belleville Main Street Half Marathon?

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

What is the time limit for the Belleville Main Street Half Marathon?

The time limit for the Belleville Main Street Half Marathon is 3.5 hours.

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

The forecast calls for a high of 72°F and a low of 62°F with a 100% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 10 years of data
Avg Temp
61°F
L:58° H:65°
RunScore
6
Conditions
Rain Freq
10%
1 of 10 yrs
Wind4mph
Dew57°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
clear-day
53°/65°-
7
2024
rain
66°/67°Light
5
2023
clear-day
63°/71°-
5
2022
clear-day
53°/63°-
7
2021
clear-day
51°/60°-
8
2020
cloudy
64°/66°-
5
2019
clear-day
66°/72°-
4
2018
partly-cloudy-day
51°/53°-
10
2017
clear-day
48°/58°-
9
2016
clear-day
65°/74°-
4