Phase One Endurance Fest

JUN
19
2027
An endurance festival in Spokane, WA featuring looped ultraruns, timed challenges, on-course aid, and awards for finishers.
Sat 19 Jun 2027
101 miles 100 kilometers 50 kilometers 6 miles 5 kilometers

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PHASE ONE//ENDURANCE FEST

PHASE ONE//ENDURANCE FEST is an endurance event held in Spokane, WA, organized by Phase One Missions and staged from the Reardan Cross Country track in Seven Mile with nearby sections of Riverside State Park and Mt Spokane State Park. The event uses a 1.56 mile loop for multiple timed and distance challenges. Registration closes June 18.

The event program includes a variety of looped challenges, time limits on some distances, and on-course support from a semi-stocked main aid station. Tailwind Nutrition and NeverSecond are listed as course sponsors and provide endurance fuel and energy gels. Crew access includes designated parking with space for tents. Required gear includes a headlamp, running gear, food, water, and electrolytes. Packet pickup and a pre-race brief are scheduled at the race location the day before and on race day. There is no refund policy at this time. Volunteer work can reduce or waive event entry according to published volunteer hours. Finishers of certain distances receive event patches or a Phase One buckle. Visit the organization's website for the most recent information.

  • 24 Hour Run: As many miles as possible, 1.56 mile laps.
  • 101 Miler: 65 laps, 101.4 miles, 32 hour cutoff, pacers allowed.
  • 100 Kilometer: 40 laps, 100 km, 24 hour cutoff, pacers allowed.
  • 50 Kilometer: 20 laps, 50 km, event patch for finish.
  • 10K Run/Ruck: 4 laps, 6.24 miles, ruck not to exceed 45 pounds.
  • 5 Kilometer: 2 laps, 5 km, event patch for finish.
  • Kiddo Sprint the Hill: About 0.6 miles round trip, parents may join.
  • Zero Dark Ultra: 12 hour, 6 hour, and 1 hour options, as many miles as possible.
  • Survive the Night: Run a 4 mile route each hour; ends on failure to complete; no pacers.
101 mi
101 Miler
100 km
100 Kilometer
50 km
50 Kilometer
6 mi
10k Run/ruck
5 km
5 Kilometer
Zero Dark Ultra 6 Hours
Zero Dark Ultra 12 Hours
Zero Dark Ultra 1 Hour
Survive the Night
24 Hour Run
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