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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.

Loup Garou Trail Run

Ville Platte, LA, US · December 5-6, 2026 (in 49 days)
Registration open 100 miles60 miles40 miles20 miles

Lula Lake Trail Blazer

Lookout Mountain, GA, US · November 14, 2026 (in 28 days)
Registration open Half Marathon1 miles10K50K

Macedonia Trail Race

Kent, CT, US · September 13, 2026 (34 days ago)
Ran · this year's race is done. 31.08 miles15.77 miles7.34 miles

Machete Muertos 200

Perris, CA, US · October 28 to November 1, 2026 (in 11 days)
Registration open 200 miles100 Mile50 Mile20 miles10 miles

MAD Backyard Ultra

East Ridge, TN, US · January 16, 2027 (in 91 days)
Registration open Backyard Ultra

Mad Meadows 50

Leavenworth, WA, US · October 9, 2027 (in 357 days)
On the calendar 50 Mile50K

Magnolia Magic River Trail Run

Pilot Hill, CA, US · December 19, 2026 (in 63 days)
Registration open 31.32 miles26.05 miles18.1 miles13 miles7.47 miles3.11 miles

Malibu Canyon Trail Races

Malibu, CA, US · June 5, 2027 (in 231 days)
On the calendar 61.1 miles48.8 miles32 miles18.7 milesHalf Marathon

Mamba 100

Memphis, TN, US · November 6-7, 2026 (in 20 days)
Full 100 Mile100K25K50K

Mammoth Trail Fest

Mammoth Lakes, CA, US · September 23-26, 2027 (in 341 days)
On the calendar distances not checked yet

Marin Ultra Challenge

Sausalito, CA, US · March 13, 2027 (in 147 days)
Registration open 50 Mile30.8 miles

Marquette Trail 50

Marquette, MI, US · August 20-21, 2027 (in 307 days)
On the calendar 52.19 miles30.51 miles

Marsh Peak Madness

Lapoint, UT, US · June 5, 2027 (in 231 days)
Registration open 5 miles12hrs6hrs

Martin House Miler

Fort Worth, TX, US · October 9-11, 2026 (8 days ago)
Ran · this year's race is done. 12hr1hr24hr3hr48h6hr

Marys Peak Trail Run

Blodgett, OR, US · June 12, 2027 (in 238 days)
Registration open 25K50K

Massanutten Mountain Trails 100 Mile Run

Fort Valley, VA, US · May 15, 2027 (in 210 days)
On the calendar 100.6 miles65.2 miles

McClellan Madness

Anniston, AL, US · March 6, 2027 (in 140 days)
Registration open 4hrs8hrs

McCormick 24

Gig Harbor, WA, US · April 24, 2027 (in 189 days)
On the calendar 12 HR DAY12 HR NIGHT24 HR6 HR

McDowell Mountain Frenzy

Fountain Hills, AZ, US · December 5, 2026 (in 49 days)
Registration open 50.1 miles30.8 miles15.3 miles10 miles5.2 miles

McNotagain Fall Trail Runs

Pekin, IL, US · November 14, 2026 (in 28 days)
Registration open 50 Mile30 miles10 miles3.5 miles

Megunticook Trail Festival

Camden, ME, US · September 11, 2027 (in 329 days)
On the calendar 50KHalf Marathon10K

Mendocino Coast 50K

Mendocino, CA, US · April 17, 2027 (in 182 days)
On the calendar 50K

Mendocino Running Festival

Mendocino, CA, US · September 11, 2027 (in 329 days)
Registration open Half Marathon10K12hrs6hrs

Mendon Trail Run

Mendon, NY, US · November 7, 2026 (in 21 days)
Registration open Half Marathon10K50K5K

Mental Health Ultra Marathon

Newnan, GA, US · November 7, 2026 (in 21 days)
Registration open 30 miles12 miles6 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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