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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.

Chief Ladiga 100

Jacksonville, AL, US · April 10, 2027 (in 176 days)
Registration open 100 Mile50 MileHalf Marathon50K

Childish Nonsense

Palatine, IL, US · April 24, 2027 (in 190 days)
Registration open 49.5 miles33 miles16.5 miles5.5 miles

Chino Hills Trail Run Series Fall

Brea, CA, US · November 7, 2026 (in 22 days)
Registration open 30.31 miles18.55 miles

Chubb Trail Races

St Louis, MO, US · April 3, 2027 (in 169 days)
Registration open 8 miles25K50K

Chuckanut 50k

Bellingham, WA, US · March 21, 2026 (209 days ago)
Ran · this year's race is done. 50K

Chupacabra 50

Quanah, TX, US · March 20, 2027 (in 155 days)
Registration open 50 Mile12.41 miles54K

Clear Creek Ultra

Crystal Springs, MS, US · October 17, 2026 (tomorrow)
Registration open 10 Hour

Climb 89

Richland, WA, US · December 4-5, 2026 (in 49 days)
Registration open 32hrs

Cline Buttes

Redmond, OR, US · May 29-30, 2027 (in 225 days)
Registration open 3.1 miles12 hour24hrs3 hour6 hourLast Person Standing

Cloudland Canyon 50 Mile/50K/25K/5 MIle

Rising Fawn, GA, US · December 5-6, 2026 (in 50 days)
Registration open 46.85 miles29.54 miles15.63 miles4.63 miles

Cloudland Moonlight 50k / 25k / 10k

Rising Fawn, GA, US · July 24, 2027 (in 281 days)
On the calendar 10K25K50K

CMAR Trail Races: Cry Me A River

Chillicothe, IL, US · July 9-11, 2027 (in 266 days)
On the calendar 100.2 miles50.1 miles33.47 miles14.36 miles

Coal Miner

Roslyn, WA, US · September 12, 2026 (34 days ago)
Cancelled 51.3 miles

Coast To Coaster Road Race (230ish Miles)

Sandusky, OH, US · April 22-24, 2027 (in 188 days)
Registration open 100 Mile232 miles

Cocodona 250

Black Canyon City, AZ (start) / Flagstaff, AZ (finish), US · May 2-7, 2027 (in 198 days)
Registration open 253.3 miles

Cohutta Madness

Chatsworth, GA, US · November 21, 2026 (in 36 days)
Registration open 12 hours4 hours8 hours

Coldwater Hundred

Goodyear, AZ, US · January 16-17, 2027 (in 92 days)
Registration open 101.3 miles64.2 miles32.2 miles20 miles9.5 miles5 miles

Coldwater Trail Race

Anniston, AL, US · November 1, 2026 (in 16 days)
Registration open 32.3 miles15.5 miles

Collegeville Ultra

Collegeville, MN, US · May 2, 2027 (in 198 days)
Registration open 20 miles10 miles50K

Colorado Cold Rush Ultra

Colorado Springs, CO, US · November 21, 2026 (in 36 days)
Registration open 30.6 miles13.2 miles6.4 miles

Colossal-Vail 50/50

Vail, AZ, US · December 5, 2026 (in 50 days)
Registration open 50.1 miles33.8 miles13.6 milesHalf Marathon

Colt 45 Trail Run

Lakeland, FL, US · November 21, 2026 (in 36 days)
Registration open 60 miles45 miles14 miles45K

Comrades Marathon

Durban, KwaZulu-Natal, ZA · June 13, 2027 (in 240 days)
On the calendar distances not checked yet

Conquer The Wall Endurance Challenge | 47HR & 35HR

Williamson, WV, US · March 12-14, 2027 (in 147 days)
Registration open 35H35H (7AM)35H Ruck35H Ruck (7AM)47 hr Individual ruck47H

Continental Divide Trail Run

Steamboat Springs, CO, US · August 21, 2027 (in 309 days)
On the calendar 30.37 miles16.67 miles4.87 miles
Page 6 of 36
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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