Chicago Half Marathon

Chicago, IL|Sunday, September 27, 2026|165 days away
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Weather

Climate Avg
TimeTempDew PtHumidityWindConditions
Start62.5 – 64.3°F58° OK72 – 93%10 mph SEPartly cloudy
8:00 AM62.6 – 65°F58° OK75 – 95%11 mph SEClear sky
Finish64.5 – 65.4°F59° OK79 – 84%12 mph NWClear sky

Based on 3-year average for this date. Real forecast available in 149 days.

Elevation Profile

Loading map…

Course Stats

Net Elevation
+0 ft
Distance
13.11 mi
Total Gain
+297 ft
Total Loss
-297 ft
Max Grade
10.0%
Altitude
600 ft

Mile Splits

MileGrade
1+0.0%
2-0.2%
3+0.1%
4+0.0%
5+0.0%
6-0.2%
7+0.0%
8+0.0%
9+0.3%
10-0.1%
11+0.0%
12+0.2%
13-0.2%
14+0.2%

Chicago Half Marathon Pace Calculator & Race Plan

The Chicago Half is a flat out-and-back along Lake Shore Drive starting from Jackson Park near the Museum of Science and Industry. Only about 120 feet of total gain. The lakefront course is exposed to wind off Lake Michigan.

September in Chicago is usually good for running. Our model adjusts for the flat terrain and potential lakefront wind.