Run as many laps as you are willing or able in a 6-hour period. Each lap is 1.061 miles around the lagoon at Crissy Field. The course is flat with 60% dirt and 40% asphalt path.

Results

6 Hours View course top times

Date Finishers Top Result Top Result (F)
09/01/19 13 42.75 33
09/02/18 13 42 34.5
06/04/17 No Results Posted. Submit Results
10/23/16 No Results Posted. Submit Results
07/12/15 4 42.44 28.65
07/13/14 12 41.5 30.86
06/02/13 11 42.44 25.46
07/08/12 16 45.623 28.647
07/10/11 20 44.562 38.196
09/24/06 10 39.41 34.28
09/25/05 11 40.98 29.95
09/14/03 5 44.13 27.58

12 Hours View course top times

Date Finishers Top Result Top Result (F)
09/24/04 25 65.31 65.67
09/14/02 20 66.2 59.8956
08/11/01 26 73.69 51.23
08/26/00 25 74.06 55.96
08/28/99 33 80.39 58.32
09/20/98 28 71.72 52.8
11/09/97 16 74.08 50.44
10/06/96 25 76.4 68.6
10/07/95 18 74 51.2
09/11/94 15 66.99 55.17
08/15/93 15 69.35 40.19
We try to keep the most accurate information about this race, but changes do happen. Always visit the official race website for the most up to date information.
Earth Day 50K
  • Apr 18, 2020
  • Crystal Lake, IL
50 KM