This trail ultra marathon promises to be one of Florida's most unique, and challenging, trail runs. The race will be held entirely within the Jupiter Ridge Natural Area in Jupiter, Florida. We have designed a 3.45 mile loop which you'll run 9 times for 31.05 miles!

There is a 9 hour cutoff for this event due to the restrictions of hours of operations imposed by the Palm Beach County Environmental Resources Management team. Jupiter Ridge Natural Area is an environmentally sensitive site and we must abide by the restrictions inherent to their protection of the area, and the species of wildlife and plants occurring within the site.

Upcoming Races

Dec 27 2020
50 KM
9x 3.45 mile loop
2,800 2,800 ft.
Multiple Loop Course
9 :00 Cutoff
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)
12/28/19 25 4:26:02 5:16:34
12/29/18 29 4:42:38 6:48:19
12/30/17 20 5:00:10 5:26:59

50 Miles View course top times

Date Finishers Top Result Top Result (F)
12/29/18 7 9:55:33 11:17:13
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 23, 2021
  • Ardmore, OK
50 KM 100 KM 100 Miles