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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.

Rabid Raccoon 100

Beaver Falls, PA, US · June 4-6, 2027 (in 230 days)
Registration open 100.6 milesHalf Marathon100 Mile5K

Rainbow Ridge 20k/50k

Rainbow, OR, US · October 10, 2026 (7 days ago)
Ran · this year's race is done. distances not checked yet

Range of Light Trail Races

Bishop, CA, US · October 24, 2026 (in 7 days)
Cancelled 32.06 miles3.12 miles10K33K

Rattler Trail Race

Colorado Springs, CO, US · April 17, 2027 (in 182 days)
Registration open 31 miles15.5 miles6.2 miles3.5 miles

Ray Miller 50/50

Malibu, CA, US · December 5, 2026 (in 49 days)
Full 48.9 miles32 miles20.6 miles

Rebecca Mountain 50 Mile

Sylacauga, AL, US · September 12, 2026 (35 days ago)
Ran · this year's race is done. 50 Mile31.4 miles14.74 miles

Red Barn Challenge

Lykens, PA, US · October 2-3, 2026 (15 days ago)
Ran · this year's race is done. 12hrs24hrs6hrs

Red Dirt Rambler

Shreveport, LA, US · October 24, 2026 (in 7 days)
Registration open Marathon100K15K30K60K

Red Dirt Ultra

Provencal, LA, US · February 20, 2027 (in 126 days)
Registration open 100K35K50K

Red Mountain 50K, 30K, Trail Half

Ivins, UT, US · March 6, 2027 (in 140 days)
Registration open 30.56 miles20.38 miles14.48 miles

Red Rock Canyon Ultra

Blue Diamond, NV, US · November 14-15, 2026 (in 28 days)
Registration open 100K50K10.49 miles

Regal Beagle Ultra

Akron, OH, US · November 22, 2026 (in 36 days)
Registration open 30 miles15 miles5.12 miles

Return to Lake Lure

Lake Lure, NC, US · January 9, 2027 (in 84 days)
Registration open 20 miles9.89 miles10K25K50K5K

Ridge to Rails 50k, Half, & 10k

Old Fort, NC, US · June 5, 2027 (in 231 days)
On the calendar Half Marathon10K50K

Rim Runner Trail Races

Sewanee, TN, US · April 10, 2027 (in 175 days)
Registration open 50.76 miles30.1 miles13.24 miles

Rim to River 100

Oak Hill, WV, US · October 24-25, 2026 (in 7 days)
Waitlist only 100 Mile

Rise El Taco Loco

San Antonio, TX, US · November 14, 2026 (in 28 days)
Registration open 100 Mile32.67 miles16.05 miles100K10K5K

Rise in the Pines

Smithville, TX, US · July 17, 2027 (in 273 days)
Registration open 6.14 miles100K160K200K30K50K

Rise Sasquatch Shuffle

Grapeland, TX, US · May 1, 2027 (in 196 days)
Registration open 100K10K30K50K5K

River Bluff Trail Runs

St. Joseph, MO, US · December 19, 2026 (in 63 days)
Registration open 10K25K50K

River of No Return Endurance Runs

Challis, ID, US · June 19, 2027 (in 245 days)
On the calendar 69.1 miles34 miles18.5 miles

Riverbend Ultras 12 HR/50K

Jupiter, FL, US · September 11, 2027 (in 329 days)
Registration open 31.2 miles12-Hour

Rock Bridge Revenge

Columbia, MO, US · October 17, 2026 (today)
Registration closed 25K50K

Rockin Choccolocco 50K - 25K - 10K

Heflin, AL, US · April 24, 2027 (in 189 days)
Registration open 32 miles15.5 miles6.2 miles

Rockin Rockwoods 53K and 1/2 Marathon

Wildwood, MO, US · September 26, 2026 (21 days ago)
Ran · this year's race is done. distances not checked yet
Page 24 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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