Decision summary
4:45:00 total cut-off
Historical race-date favourability, not a forecast
Verified GPS route
Quick answers
RaceIndex has a GPS course file for Detroit Free Press Marathon Half Marathon, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.
Underfoot, expect a road course. The setting includes city and riverside.
Gear check on Monroe Street at Campus Martius, 5:30am-2:30pm; only provided clear bags accepted. Detroit-Windsor Tunnel closes race morning ~6:15-10:30am.