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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.

FlatRock

Independence, KS, US · September 26, 2026 (21 days ago)
Ran · this year's race is done. 12K25K50K5K

Flatrock | Georgia

Dacula, GA, US · October 17, 2026 (today)
Registration open 50 MileHalf Marathon50K

FlatRock 101

Independence, KS, US · April 17, 2027 (in 182 days)
Registration open 101 miles101K12K25K50K5K

Florida Roots Trail Series: Fort Clinch

Fernandina Beach, FL, US · January 23, 2027 (in 98 days)
Registration open 31 miles18.6 miles6.2 miles

Fog City Ultra

San Francisco, CA, US · September 5, 2026 (42 days ago)
Ran · this year's race is done. Backyard Ultra

Fonta Flora 50k and Half Marathon

Nebo, NC, US · October 24-25, 2026 (in 7 days)
Waitlist only Half Marathon50K

Forbidden Forest 30 Hour Ultra Trail Run

Stratford, CT, US · October 3-4, 2026 (14 days ago)
Ran · this year's race is done. 30hrs

Forgotten Florida

Christmas, FL, US · January 30-31, 2027 (in 105 days)
Registration open 98.27 miles51.42 miles14.85 miles8.63 miles

Forgotten Forest Ultra Run

Stratford, CT, US · May 15, 2027 (in 210 days)
Registration open 9hrs

Fort Ord Trail Run

Salinas, CA, US · February 6-7, 2027 (in 112 days)
Registration open 31 miles16.3 miles6.4 miles

Franklin Mountains TrailFest

El Paso, TX, US · January 21-24, 2027 (in 96 days)
Registration open 100K10K30K50K5K

Free State Trail Run

Meriden, KS, US · October 11, 2026 (6 days ago)
Ran · this year's race is done. distances not checked yet

Free to Run Trail Races

Pittsfield, MA, US · September 12, 2026 (35 days ago)
Cancelled distances not checked yet

Freight Train 100k/50k

Farmville, VA, US · December 5, 2026 (in 49 days)
Registration open Half Marathon100K50K

Frigid Beast Feast

Springfield, LA, US · December 11-13, 2026 (in 55 days)
Registration open 150 miles102 miles75 miles51 miles33 miles15 miles6 miles3 miles

Froggy Mountain Warrior 100

Galax, VA, US · February 26, 2027 (in 132 days)
Registration open 100 Mile

Front Range Ultra Dayze

Loveland, CO, US · September 2-6, 2027 (in 320 days)
Registration open 200 miles100 Mile100-Hour12-Hour12-Hour Night24-Hour48-Hour50K72-Hour

Frozen Gnome

Crystal Lake, IL, US · January 9, 2027 (in 84 days)
Registration open 10K50K

Frozen: H3

Bethera, SC, US · January 8-10, 2027 (in 83 days)
Registration open 100 Mile50 Mile10K25K50K

FSR 100

Copperhill, TN, US · October 17, 2026 (today)
Registration open 100 Mile

Funest 50k @ Carter Rd

Mulberry, FL, US · April 17, 2027 (in 182 days)
Registration open 10K30K50K

Gaspin Through The Aspens

American fork, UT, US · September 18, 2027 (in 336 days)
On the calendar 50 Mile25K50K

Gate2Gate Trail Run

Alachua, FL, US · October 24, 2026 (in 7 days)
Full 25K50K

Geaux Wild Ultra

Doyline, LA, US · March 6, 2027 (in 140 days)
Registration open 100 miles50 miles50K

Georgia Sky to Summit

Sky Valley, GA, US · October 24-25, 2026 (in 7 days)
Registration open 29.9 miles14.42 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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