Runners start · local time — Wave 1 07:35(A~E corral) / Wave 2 08:00(F·G·H·J) / Wave 3 08:35(K·L·M·N) — Wheelchair Male 07:20 · Female 07:21 · Handcycle 07:23 · Professional 07:30 · High Performance 07:32
Grant Park start/finish, passing through 29 neighborhoods
The race starts and finishes in Grant Park and passes through 29 neighbourhoods.
The organisers describe it as a flat, fast course and say that seven world records and numerous national records have been set on this course.
The course time limit is 6 hours 30 minutes, equivalent to a 15-minute pace per mile.
A vehicle following the final starter maintains this pace and signals when the roads can reopen.
Runners who fall behind this pace will not receive full support from aid station and traffic-safety personnel,
and those finishing after 4:00 p.m. may not be recorded or published as official finishers.
There are 20 aid stations, spaced approximately 1–2 miles apart.
Each aid station is laid out in this order: a medical tent (linked to runner transport vehicles),
portable toilets for general and accessible use, Gatorade Endurance (lemon-lime), on-course information and water.
Medical support is provided at 22 locations on the course: all 20 aid stations, plus extra tents between miles 14 and 15 and in the final mile.
They are marked with red vertical signs bearing a medical icon.
Timing points are located at the start line, every 5km, the half marathon point (13.1 miles), miles 20–25, mile 25.2, and the finish.
Digital clocks are positioned at the start line, every 5km, and the finish, with kilometer markers indicating their locations.
The finish clocks show elapsed time by wave, so your own time depends on when you cross the start line.
This is a World Athletics Platinum Label event.
