Operation FIVE ZERO is a test of endurance, physical fitness, and mental strength. The Area of Operations (AO) for Operation FIVE ZERO is the Uinta-Wasatch-Cache National Forest in Utah. Candidates must complete the 50 +/- mile route in under 26 hours to PASS and under 18 hours to earn the GBF Dog Tag.

Candidates will meet at the Forming Up Point (FUP) at the Vivian Park Trailhead. At 0830hrs, GBF Staff will give an event brief before checking candidates maps and kit. Candidates are advised to carry paper maps (waterproofed), in addition to their smartphone, for navigation. Each candidate’s backpack must weigh a minimum of 20 lbs (without water and food). Once GBF Staff are happy with the candidate's kit, they will be released to begin the route. The route is a mix of trails and minor roads so candidates should be able to move quickly.

Upcoming Races

Jun 25 2022
50 Miles
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts


No Past Races
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. If you see an error, please let us know

Kettle Moraine 100 Endurance Runs

  • Jun 11, 2022
  • La Grange, WI
50 KM 38 Miles 100 KM 100 Miles