2018 Biggest Ultrarunning Races

By finisher count. North American races only.
2019 2018 2017 2016 2015
Finishers Event Winner
762

JFK

Nov 17 / 50 Miles / Boonsboro MD
601

Way Too Cool

Mar 03 / 50 KM / Cool CA
444

Rachel Carson Trail Challenge

Jun 23 / 34 Miles / Pittsburgh PA
437

The North Face Endurance Challenge New York

May 05 / 50 KM / New York NY
421

Run the Rut

Sep 02 / 50 KM / Big Sky MT
421

Tunnel Hill 100

Nov 10 / 50 Miles / Vienna IL
410

Chuckanut 50k

Mar 17 / 50 KM / Fairhaven WA
400

Silver Rush 50

Jul 08 / 50 Miles / Leadville CO
400

Labor Pain

Sep 02 / 12 Hours / Reading PA
382

Hinson Lake 24 Hour Ultra Classic

Sep 29 / 24 Hours / Rockingham NC
382

American River

Apr 07 / 50 Miles / Folsom CA
379

Leadville Trail

Aug 18 / 100 Miles / Leadville CO
369

Squamish 50

Aug 19 / 50 Miles / Squamish BC
367

Javelina Jundred

Oct 27 / 100 Miles / Fountain Hills AZ
359

Squamish 50

Aug 18 / 50 KM / Squamish BC
358

NYRR NYC (Knickerbocker) 60K

Nov 17 / 60 KM / Manhattan NY
355

Golden Gate Dirty 30

Jun 02 / 50 KM / Black Hawk CO
353

Black Canyon Trail

Feb 17 / 100 KM / Mayer AZ
346

Minnesota Voyageur

Jul 28 / 50 Miles / Carlton MN
337

HAT Trail Run

Mar 24 / 50 KM / Havre de Grace MD
331

The North Face Endurance Challenge Washington DC

Apr 28 / 50 KM / Washington DC DC
326

Cowtown Ultra

Feb 25 / 50 KM / Fort Worth TX
325

Ice Age Trail

May 12 / 50 Miles / La Grange WI
317

Mountain Mist

Jan 27 / 50 KM / Huntsville AL
310

Dead Horse Ultra

Nov 17 / 50 KM / Moab UT
310

Blues Cruise

Oct 07 / 50 KM / Reading PA
299

Western States

Jun 23 / 100 Miles / Squaw Valley CA
296

Howl at the Moon 8 Hour

Aug 11 / 8 Hours / Danville IL
292

Lake Sonoma

Apr 14 / 50 Miles / Healdsburg CA
292

Squaw Peak 50 Mile Trail Run

Jun 02 / 50 Miles / Provo UT
291

Ultra Caballo Blanco Copper Canyon Ultra

Mar 04 / 50 Miles / Urique
287

Miwok

May 05 / 100 KM / Stinson Beach CA
280

Quad Dipsea

Nov 24 / 28.4 Miles / Mill Valley CA
279

Zion 100

Apr 20 / 50 KM / Virgin UT
278

The Canyons

Apr 28 / 100 KM / Foresthill CA
277

Vermont 100

Jul 21 / 100 Miles / West Windsor VT
272

Promise Land

Apr 28 / 50 KM / Lynchburg VA
268

The North Face Endurance Challenge New York

May 05 / 50 Miles / New York NY
268

Hyner Trail Challenge

Apr 21 / 50 KM / Hyner PA
264

Superior Spring Trail Race

May 19 / 50 KM / Lutsen MN
264

Never Summer 100K

Jul 28 / 100 KM / Gould CO
259

TNF Ultra-Trail Harricana of Canada (UTHC)

Sep 07 / 65 KM / La Malbaie QC
255

Bighorn

Jun 15 / 32 Miles / Dayton WY
253

Afton Trail

Jul 07 / 50 KM / Hastings MN
251

Rio Del Lago

Nov 03 / 100 Miles / Granite Bay CA
248

Bandera

Jan 06 / 100 KM / Bandera TX
247

GORE-TEX Grand Traverse Mountain Run

Sep 01 / 40 Miles / Crested Butte CO
246

Grizzly Ultra

Oct 07 / 50 KM / Canmore AB
244

Stone Mill 50M

Nov 17 / 50 Miles / Montgomery Village MD
244

Sun Mountain

May 19 / 50 KM / Winthrop WA
Mt. Taylor 50k
  • Sep 28, 2019
  • Grants, NM
50 KM