2021 Biggest Ultrarunning Races

By finisher count. North American races only.
2021 2020 2019 2018
Finishers Event Winner
548

Zion 100

Apr 10 / 50 KM / Virgin UT
476

Rachel Carson Trail Challenge

Jun 19 / 34 Miles / Pittsburgh PA
403

Mountain Mist

Jan 23 / 50 KM / Huntsville AL
366

Golden Gate Dirty 30

Jun 12 / 50 KM / Black Hawk CO
364

Black Canyon Ultras

Feb 14 / 100 KM / Mayer AZ
325

Bryce Canyon 100

May 29 / 50 KM / Bryce Canyon UT
302

Promise Land

Apr 24 / 50 KM / Lynchburg VA
293

Bandera

Jan 09 / 100 KM / Bandera TX
265

Squaw Peak 50 Mile Trail Run

Jun 12 / 50 Miles / Provo UT
252

Rocky Raccoon

Feb 06 / 100 Miles / Huntsville TX
252

McDonald Forest

May 08 / 50 KM / Corvallis OR
247

The Canyons

Apr 24 / 100 KM / Foresthill CA
244

Bryce Canyon 100

May 29 / 60 KM / Bryce Canyon UT
243

Bryce Canyon 100

May 29 / 50 Miles / Bryce Canyon UT
237

Desert Rats Trail Running Festival

Apr 17 / 50 KM / Fruita CO
219

Dirty German Endurance Fest

May 08 / 50 KM / Philadelphia PA
218

Grayson Highlands 50k

May 01 / 50 KM / Mouth of Wilson VA
217

Zion 100

Apr 10 / 100 KM / Virgin UT
214

Hyner Trail Challenge

Apr 24 / 50 KM / Hyner PA
213

Dam Yeti 50

Jun 05 / 50 KM / Damascus VA
212

Mt Cheaha

Feb 27 / 50 KM / Delta AL
212

Behind the Rocks Ultra

Mar 27 / 50 KM / Moab UT
209

Black Canyon Ultras

Feb 13 / 60 KM / Mayer AZ
209

Smith Rock Ascent

May 15 / 50 KM / Terrebonne OR
200

Crown King Scramble

Mar 27 / 50 KM / Phoenix AZ
197

Eastern Divide

Jun 19 / 50 KM / Pembroke VA
192

Terrapin Mountain

Mar 20 / 50 KM / Big Island VA
185

Strolling Jim™

May 01 / 40 Miles / Wartrace TN
180

Mohican

Jun 19 / 50 Miles / Loudonville OH
180

Wy'east Wonder

Jun 12 / 50 KM / Parkdale OR
180

Wy'east Wonder

Jun 12 / 50 Miles / Parkdale OR
175

North Fork 50 Mile/50K

Jun 05 / 50 KM / Pine CO
166

Quest for the Crest

May 15 / 50 KM / Burnsville NC
165

Badger Mountain Challenge

Mar 26 / 50 Miles / Richland WA
164

Virginia Run for Cancer

Apr 24 / 24 Hours / Hampton VA
163

Zion 100

Apr 10 / 100 Miles / Virgin UT
162

Antelope Island Buffalo Run

Mar 26 / 50 Miles / Syracuse UT
158

Seven Trails Ultra Festival

Apr 24 / 36 Hours / Damascus,Virginia VA
150

Rocky 50

Feb 13 / 50 KM / Huntsville TX
149

Tillamook Burn Trail Run

May 02 / 50 KM / Timber OR
146

Antelope Island Buffalo Run

Mar 26 / 50 KM / Syracuse UT
140

The Algonquin 50K

Feb 13 / 50 KM / Pocomoke City MD
139

American River

May 08 / 50 Miles / Folsom CA
138

Laurel Highlands

Jun 12 / 50 KM / Ohiopyle PA
138

Brazos Bend 50

Apr 03 / 50 KM / Needville TX
138

Cruel Jewel

May 14 / 105.9 Miles / Blue Ridge GA
137

Superior Spring Trail Race

May 20 / 50 KM / Lutsen MN
137

Logan Peak Trail Run

Jun 19 / 28 Miles / Logan UT
137

Tillamook Burn Trail Run

May 01 / 50 Miles / Timber OR
135

Quad Rock 50

May 08 / 50 Miles / Fort Collins CO

The results database is the property of UltraRunning Magazine. Use of the information and data is allowed and encouraged, however when it is shared or published attribution is required, as follows: Source UltraRunning Magazine (and if online, a link to UltraRunning.com).

Silverheels 100

  • Jul 10, 2021
  • Fairplay, CO
100 Miles