“Arctic Frog” Endurance Run is a beginner’s Ultra marathon. This scenic course features a trilogy of pavement, wooded and crushed limestone trails that runs North and South of Des Plaines River (DPR) and Northwest Casey Trails. Make NO mistake- it will NOT be a “gimme” with a few challenges in stow (rolling hills) but fair! What's more, if lucky-this northern Chicago suburbia turns into a "Winter Wonderland" come December each year making it a unique running experience for anyone that haven’t tried running in the cold winter months!

Upcoming Races

Dec 5 2020
50 KM
Multiple Loop Course
2 Elevation Rating
Rolling, ~2500 feet in 50 miles
2 Surface Rating
Mostly groomed trail or dirt roads


50 KM View course top times

Date Finishers Top Result Top Result (F)
12/14/19 109 3:41:59 4:10:40
12/01/18 72 4:24:33 4:00:47
12/02/17 105 3:15:43 4:42:16
12/03/16 79 3:24:34 4:14:05
12/05/15 110 3:59:41 4:11:08
12/06/14 52 4:09:00 4:12:01
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.
Lake Murray Endurance Run
  • Oct 24, 2020
  • Ardmore, OK
50 KM 100 KM 100 Miles