Loading...
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.

Groovin in the Aspens

Flagstaff, AZ, US · September 13, 2026 (34 days ago)
Ran · this year's race is done. distances not checked yet

Gulf Coast Grind

Freeport, TX, US · April 10, 2027 (in 175 days)
Registration open MarathonHalf Marathon10K50K5K

Hacienda Hills Trail Run - Winter

San Jose, CA, US · January 2, 2027 (in 77 days)
Registration open 30.5 miles26.68 miles19 miles13 miles9.1 miles6 miles3.11 miles

Hagg Mud 50K/25K

Gaston, OR, US · February 13, 2027 (in 119 days)
On the calendar 31 miles15.5 miles

HALLOWEEN SPOOKTACULAR 6 HOUR AND 4 HOUR TRAIL RUN

Newport Coast, CA, US · October 31, 2026 (in 14 days)
Registration open 4hrs6hrs

Hallucination

Johns Island, SC, US · November 20-22, 2026 (in 34 days)
Registration open 12hrs24hrs34 Hour6hrs

Happy Chinese New Year

San Diego, CA, US · February 20, 2027 (in 126 days)
Registration open 51 miles

Hard Times 100

Paris, TX, US · January 2, 2027 (in 77 days)
Registration open 100 Mile68.7 miles32.8 miles

Harding Hustle

Modjeska Canyon, CA, US · July 24, 2027 (in 280 days)
On the calendar 31.83 miles18.4 miles9.2 miles

Hardrock Hundred Endurance Run

Silverton, CO, US · July 9-11, 2027 (in 265 days)
Lottery open 98.95 miles

Hare Mountain 100

Hagarville, AR, US · October 23-24, 2026 (in 6 days)
Registration open 102 miles50 Mile1.8 miles10K25K50K

HAROC (aka Hanging Rock Challenge)

Danbury, NC, US · December 5, 2026 (in 49 days)
Registration open 30.6 miles15.8 miles

Harvest & Howitzer Backyard Ultra

Placerville, CA, US · April 30, 2027 (in 195 days)
Registration open Backyard Ultra

HARVEST TRAIL RUNNING FESTIVAL

Farmersville, TX, US · October 31, 2026 (in 14 days)
Registration open MarathonHalf Marathon10K50K5K

HAT Run 50k

Havre de Grace, MD, US · March 20, 2027 (in 154 days)
On the calendar 50K

Hawk Hundred

Lawrence, KS, US · September 12-13, 2026 (35 days ago)
Registration open 100 Mile50 MileMarathon24.54 miles

Headwaters Trail Runs

Mount Shasta, CA, US · June 19, 2027 (in 245 days)
On the calendar 32.6 miles21 miles6.6 miles

Heartland

Cassoday, KS, US · October 9-11, 2026 (8 days ago)
Ran · this year's race is done. 125 miles100 Mile100K50 Mile

Heartland 100 Spirit of the Prairie

Cassoday, KS, US · October 9-11, 2026 (8 days ago)
Registration open 125 miles100 Mile100K50 MileMarathonHalf Marathon

Hell Creek 100

Sylvan Grove, KS, US · October 30 to November 1, 2026 (in 13 days)
Registration open 140 miles100 Mile20 miles100K10K

Hell Creek Half & 50k

Sylvan Grove, KS, US · August 21, 2027 (in 308 days)
Registration open 32.17 miles12.74 miles

Hell Hole Hundred

Bethera, SC, US · June 4-6, 2027 (in 230 days)
Registration open 100 Mile50 Mile10K25K50K

Hell Horse Hundred

Big Sandy, TX, US · June 19, 2027 (in 245 days)
Registration open 100 Mile100K10K25K50K5K

Hellbender 100

Old Fort, North Carolina, US · May 7, 2027 (in 202 days)
Waitlist only distances not checked yet

Hellgate 100K++

Natural Bridge Station, VA (start) / Fincastle, VA (finish), US · December 12, 2026 (in 56 days)
Scheduled 100K
Page 13 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?

NavRun builds your pacing from your own training, then turns it into a plan your crew can follow: when to leave and where to park.

Start free