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Ultras

Ultras, and what they ask of you

Cutoffs, crew access, drop bags, and where your people can park. Nothing here needs an account.
Free, and always will be. NavRun makes money from race-day planning for runners who want it, never from this. Ultras change constantly, sometimes the morning of. Always confirm with the race director and the official website before you rely on anything here.
Not sure which one yet? Watch one first. Course previews and films, made by people who were out there.
883 races

Every race we hold Twenty five at a time. Search a race by its name, or by the name it used to have.

Oli Kai 3, 6, & 9 Hour

Chattanooga, TN, US · September 5, 2026 (42 days ago)
Ran · this year's race is done. 3hrs6hrs9hrs

Ollie's Ultra

Chanute, KS, US · December 4-6, 2026 (in 48 days)
Registration open 12 Hour Friday12 Hour Saturday24 Hour Friday24 Hour Saturday3 Hour Saturday36 Hour Friday48 Hour Friday6 Hour Friday6 Hour Saturday

OPSF5050

Poland, IN, US · March 20, 2027 (in 154 days)
Registration open 50.6 miles14 miles10K50K

Osprey Ambler

Sultan, WA, US · October 17, 2026 (today)
Registration open 26.24 miles3hrs6 Hours

OSS/CIA 50 Mile Night Run

Triangle, VA, US · June 12, 2027 (in 238 days)
Registration open 51 miles25.5 miles

Ouachita Switchbacks

Big Cedar, OK, US · January 16, 2027 (in 91 days)
Registration open 17.7 miles10 miles50K

Ouray 100 Mile Endurance Run

Ouray, CO, US · July 16-18, 2027 (in 272 days)
On the calendar 102.1 miles

Outlands Endurance Races

Pilot Hill, CA, US · April 17-18, 2027 (in 182 days)
Registration open 50 Mile50K25K

Outlaw 100 Oklahoma

Quinton, OK, US · February 12-14, 2027 (in 118 days)
Registration open 135 miles100 Mile52 miles26.2 milesHalf Marathon4 miles

Over The Hill Track Club High Desert 50K & 30K

Ridgecrest, CA, US · December 5, 2026 (in 49 days)
Registration open 29.87 miles18.21 miles6.79 miles

Ozark Foothills Endurance Runs

Wildwood, MO, US · April 9-11, 2027 (in 174 days)
Registration open 104.8 miles63 miles52.4 miles26.01 miles15.34 miles50K

Ozark Trail 100 Mile Endurance Run

Centerville, MO (start) / Steelville, MO (finish, Bass River Resort HQ), US · October 31 to November 1, 2026 (in 14 days)
Registration open 101 miles

Painted Horse Urban Ultra

Ocala, FL, US · February 27, 2027 (in 133 days)
Registration open 25K55K

Paiute Meadows Trail Run

Susanville, CA, US · May 8, 2027 (in 203 days)
On the calendar 31.7 miles18.6 miles13.7 miles4.5 miles

Palo Duro Trail Run

Canyon, TX, US · October 17, 2026 (today)
Registration open 50 Mile50K15.7 miles

Panther City Ultra

Fort Worth, TX, US · April 3, 2027 (in 168 days)
Registration open 5.9 miles2.89 miles25K50K

Pass Mountain

Mesa, AZ, US · November 14, 2026 (in 28 days)
Registration open 49.7 miles31.2 miles15.6 miles6.2 miles3.5 miles

Patapsco Valley 50K

Baltimore, MD, US · October 24, 2026 (in 7 days)
Registration open 25K50K

Pawling 24 Hour Trail Running Festival

Pawling, NY, US · September 19-20, 2026 (28 days ago)
Ran · this year's race is done. 12hrs12hrs (Night Start)24hrs3hrs6hrs

PDX 50-50

Portland, OR, US · September 12, 2026 (35 days ago)
Ran · this year's race is done. 53.72 miles32.32 miles

Pemberton Trail

Fountain Hills, AZ, US · January 23, 2027 (in 98 days)
Registration open 25K50K

Pere Malfait Trail Race

Bastrop, LA, US · November 21, 2026 (in 35 days)
Registration open 16 miles8 miles50K

Perpetua Coast

Yachats, OR, US · October 3-4, 2026 (14 days ago)
Ran · this year's race is done. 31.1 miles20.1 miles13.4 miles6.6 miles

Perpetua FatAss

Yachats, OR, US · January 9, 2027 (in 84 days)
Registration open 9 miles20K30K50K

Peytons Wild and Wacky 10x5K

Mount Pleasant, SC, US · March 13, 2027 (in 147 days)
Full 50K5K
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How this gets better. Every race here was read off the race's own pages and sourced fact by fact. Where nobody has checked something, it says so instead of guessing.
See something wrong or out of date? Open the race and use the form at the bottom of its page.
Are you the race director? The same page has a form that comes straight to us, and we write back.
Anything else: [email protected]
Got one on the calendar?

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