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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.

Arkansas Traveller 100

Perryville, AR (race headquarters at Camp Ouachita, near Williams Junction), US · October 3-4, 2026 (13 days ago)
Registration open 100.3 miles

Arrowhead Endurance Run

Johnston City, IL, US · October 10-11, 2026 (6 days ago)
Ran · this year's race is done. 12 hour - NIGHT TIME12hrs24 Hour3 Hour Race6hrs

Atlanta Fat Ass 50K

Lithia Springs, GA, US · January 10, 2027 (in 86 days)
On the calendar 25K50K

Autumn Leaves 50M/50K/30K

St. Paul, OR, US · October 24, 2026 (in 8 days)
Registration open 30K50K80K

Avalon Benefit 50 Mile/50K Run

Avalon, CA, US · January 9, 2027 (in 85 days)
Waitlist only 50 Mile50K

Azalea 12/24 Hour

Palatka, FL, US · November 7-8, 2026 (in 22 days)
Registration open 50 Mile12hrs24hrs50K

AZT Oracle Rumble

Oracle, AZ, US · January 30, 2027 (in 106 days)
Registration open 50.4 miles32.2 miles12.9 miles7.4 miles

Bachelor Ascent

Bend, OR, US · September 12, 2026 (34 days ago)
Ran · this year's race is done. 31 miles17.9 miles10.2 miles3.6 miles

Back 9 Endurance Run

Copper Harbor, MI, US · May 29-30, 2027 (in 225 days)
Registration open 12HR24HR

Back Cove Backyard Ultra

Portland, ME, US · July 10, 2027 (in 267 days)
On the calendar Backyard Ultra

Back On The Ranch Trail Run

Los Olivos, CA, US · October 2-4, 2026 (14 days ago)
Ran · this year's race is done. 12hrs24hrs3hrs48 Hour6hrs

Backbone Trail Ultra

Santa Monica Mountains, CA, US · January 16, 2027 (in 92 days)
On the calendar 68 miles

Backyard Ultra - World Team Championship

· October 17, 2026 (tomorrow)
Scheduled The Yard - World Team Championship

Bad Ass Backyard Ultra

Rio Linda, CA, US · March 27, 2027 (in 162 days)
Registration open 12hr Mini BUBackyard Ultra

Badger Mountain Challenge

Richland, WA, US · March 26-27, 2027 (in 161 days)
On the calendar 100 Mile62.7 miles50 Mile34.5 miles8.89 miles15K

Badger Trail Races by Ten Junk Miles Racing

Belleville, WI, US · July 31 to August 1, 2027 (in 288 days)
Registration open 100 Mile50 MileMarathonHalf Marathon100K50K

Badwater 135

Furnace Creek, CA (start area, Death Valley National Park) / Lone Pine, CA (finish area), US · July 19-21, 2027 (in 276 days)
On the calendar 135 miles

Baker Lake 50k

Baker Lake, WA, US · October 3, 2026 (13 days ago)
Ran · this year's race is done. 31.2 miles

Banana Slug Backyard Ultra

St. Paul, OR, US · April 23, 2027 (in 189 days)
Registration open Banana Slug Backyard Ultra

Bandera 100K

Bandera, TX, US · January 9-10, 2027 (in 85 days)
Registration open 100K50K25K

Bandit Ultra Trail

Los Angeles (Simi Valley), CA, US · September 26, 2026 (20 days ago)
Ran · this year's race is done. distances not checked yet

Bear River Backyard Ultra

Delmar, IA, US · November 13, 2026 (in 28 days)
Registration open 4 milesBackyard Ultra

Beast of the East 100

Kings Mountain, NC, US · December 12, 2026 (in 57 days)
Registration open 101 miles67.35 miles53.79 milesMarathonHalf Marathon

Behind the Rocks Ultra

Moab, UT, US · April 3, 2027 (in 169 days)
Registration open 50 Mile32 miles18 miles10.5 miles

Bel Monte Endurance Races

Lyndhurst, VA, US · March 20, 2027 (in 155 days)
Registration open 49.5 miles31 miles15.4 miles
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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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