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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.

Hells Dells

Prescott, AZ, US · April 24, 2027 (in 189 days)
On the calendar 30.6 miles

High Lonesome 100

Buena Vista, CO, US · July 16-17, 2027 (in 272 days)
On the calendar distances not checked yet

Hindsight Ultra Trail Runs

Dixon, IL, US · September 26-27, 2026 (21 days ago)
Ran · this year's race is done. 103 miles

Hitchcock Experience Endurance Runs

Honey Creek, IA, US · December 5-6, 2026 (in 49 days)
Registration open 100 Mile50 MileHalf Marathon101K

Hocking Hills Trail Run

Logan, OH, US · September 12, 2026 (35 days ago)
Ran · this year's race is done. 31.1 miles20.7 miles10.35 miles5.01 miles3.1 miles

HOKA Kodiak Ultra Marathons by UTMB

Big Bear Lake, CA, US · October 10-11, 2026 (7 days ago)
Registration open 99K48.4K19.5K10.5K

Holiday Lake 50K++

Appomattox, VA, US · February 13, 2027 (in 119 days)
Registration open 33.26 miles17.22 miles10K

Hollis Heat: Time Trials

Ellenboro, NC, US · June 5, 2027 (in 231 days)
Registration open 12 Hours24 Hours3 Hours6 Hours9 Hours

Honey Badger 100

Wichita, KS, US · July 10, 2027 (in 266 days)
Registration open 100 Mile

Hook Mountain Ultra

Upper Nyack, NY, US · September 19, 2026 (28 days ago)
Ran · this year's race is done. 50 Mile25 miles

Horseshoe Bend Ultras

Page, AZ, US · October 17, 2026 (today)
Registration open 51 miles34.4 miles13.6 miles

Hunter S. Thompson Fear & Loathing

San Francisco, CA, US · December 6, 2026 (in 50 days)
Waitlist only 50 Mile32.13 miles

Huntsville Run Fest

McMullen Cove, AL, US · October 24, 2026 (in 7 days)
Registration open 15.67 miles50K

Huron 100

Grass Lake, MI, US · June 12, 2027 (in 238 days)
Registration open 100 Mile50 Mile

Hurricane Hundred K

Hurricane, WV, US · September 19, 2026 (28 days ago)
Ran · this year's race is done. 100K

HURT 100

Honolulu, HI, US · January 16-17, 2027 (in 91 days)
Waitlist only 100 Mile

Husky Trail Fest

Trussville, AL, US · March 20, 2027 (in 154 days)
Registration open 15K25K50K5K

Hyner Trail Challenge

Hyner, PA, US · April 17, 2027 (in 182 days)
Full 25K50K

Ice Age Trail 50

La Grange, WI, US · May 8, 2027 (in 203 days)
On the calendar 50 Mile50K

Icebox 480/240

River Falls, WI, US · November 7, 2026 (in 21 days)
Registration open 4hrs8hrs

ICY-8

Spotsylvania, VA, US · February 6, 2027 (in 112 days)
Registration open Half Marathon8 miles8hrs

IMTUF 100 - Idaho Mountain Trail Ultra Festival

McCall, ID, US · September 19-20, 2026 (28 days ago)
Ran · this year's race is done. 100 Mile20 miles

In the Heat of the Night

Anniston, AL, US · August 14, 2027 (in 301 days)
On the calendar 100K10K25K50K

Infinitus

Ripton, VT, US · May 20-30, 2027 (in 215 days)
Registration open 250 miles100 MileMarathon9 miles888K88K

Iron Griddle

Nashville, TN, US · November 14, 2026 (in 28 days)
Registration open 31.1 miles13.5 miles6 miles
Page 14 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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