Rend Lake Half Marathon

Whittington, IL, USA · March 27, 2027·
partly-cloudy-day49°·56° high·Breezy·Dry
10
Register

Race Day Weather

partly-cloudy-day
49°at start
62° high
Breezy
Dry
Your goal
0:00:00

Cool start — fast day potential, warming through the race

A cool 49°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temperatures rising to 62°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.

Race day forecast available in 148 days
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day9
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day7
partly-cloudy-day8
partly-cloudy-day8

Pace Calculator

13.1mi
0:00:00
HH:MM:SS
Pace
—

Enter a finish time to see what race day does to it.

Common Goals:

Get forecast alerts for Rend Lake 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 Rend Lake Half Marathon race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

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

Race Info

The Rend Lake Half Marathon runs 13.1 miles on the Saturday of race weekend, starting near the Rend Lake Dam. Shortly after the start it joins the last 13 miles of the marathon course, using the lakeside bike path and rolling country roads past Lake Hamilton and Lake Benton. The race finishes at North Marcum Beach on the shore of Rend Lake in southern Illinois.

Race weekend

Saturday, March 27
8:30 AMMarathon (26.2 mi)
9:30 AMHalf Marathon (13.1 mi)
9:30 AM1/4 Marathon (6.6 mi)

FAQ

When is the 2027 Rend Lake Half Marathon?

The 2027 Rend Lake Half Marathon will be held on Saturday March 27, 2027.

What is the time limit for the Rend Lake Half Marathon?

The time limit for the Rend Lake Half Marathon is 6 hours.

What will the weather be like for the 2027 Rend Lake Half Marathon?

The forecast calls for a high of 64°F and a low of 45°F with a 13% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 4 years of data
Avg Temp
51°F
L:49° H:52°
RunScore
8
Conditions
Rain Freq
0%
0 of 4 yrs
Wind13mph
Dew34°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-day
39°/46°-
10
2025
cloudy
67°/69°-
5
2023
cloudy
48°/48°-
9
2022
clear-day
43°/46°-
9