Pace the real Chicago Marathon course

Flat and fast — but heat and humidity still set your ceiling.

Weather-adjusted finishexample3:30:00

Goal 3:30:00, right on your goal for 56°F, 46°F dew point, on a flat course. Tune the panel below for your race.

Distance

Goal finish time

Temp °F

Dew pt °F

Your pace curve

Every mile's target pace, adjusted for grade and weather.

Enter race details to see your pace curve.

Finish Time--

Avg Pace--

Easiest Mile--

Hardest Mile--

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Your email swaps this flat preview — and your pace band — for real GPS elevation data. Instantly, no code to type.

Mile-by-mile pace and split times for race day.

Factored in

Finish timeTemperature

Your band prints once this plan is built.

Pace check · Free→Real courses · Email→Full race plan · Free

The guided plan adds your own GPX course, race-date weather, and a mile-by-mile band built for your goal.