2021 Biggest Ultrarunning Races

By finisher count. North American races only.
2021 2020 2019 2018
Finishers Event Winner
189

Wy'east Howl Trail Run

Jul 31 / 50 KM / Government Camp OR
186

Eagle Up Ultra

Jun 05 / 50 KM / Canal Fulton OH
186

Yeti 100 Mile Endurance Run

Sep 24 / 100 Miles / Abingdon VA
185

Strolling Jim™

May 01 / 40 Miles / Wartrace TN
183

Labor Pain

Sep 05 / 12 Hours / Reading PA
182

Siskiyou Out Back

Jul 10 / 50 KM / Ashland OR
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
179

San Juan Solstice

Jun 26 / 50 Miles / Lake City CO
178

Bighorn

Jun 19 / 100 Miles / Dayton WY
178

Run Rabbit Run

Sep 17 / 100 Miles / Steamboat Springs CO
178

Ragged 75 Stage Race and 50k

Aug 08 / 50 KM / Danbury NH
177

Volcanic 50

Aug 07 / 50 KM / Cougar WA
176

The Barkley Fall Classic

Sep 18 / 50 KM / Wartburg TN
176

Backcountry Rise Trail Run

Jul 17 / 50 KM / Toutle WA
175

North Fork 50 Mile/50K

Jun 05 / 50 KM / Pine CO
170

Burning River

Jul 24 / 100 Miles / Willoughby Hills OH
169

Boulder Field 100

Sep 11 / 50 KM / Jim Thorpe PA
168

Crested Butte Ultra

Oct 02 / 55 KM / Crested Butte CO
168

Catamount Ultra

Jun 26 / 50 KM / Stowe VT
168

Ultra-Trail Harricana™ of Canada (UTHC)

Sep 11 / 50 Miles / La Malbaie QC
166

Quest for the Crest

May 15 / 50 KM / Burnsville NC
165

Wasatch Front

Sep 10 / 100 Miles / Kaysville UT
165

Table Rock Ultras

Sep 18 / 50 KM / Morganton NC
165

Badger Mountain Challenge

Mar 26 / 50 Miles / Richland WA
165

Beaverhead Endurance Runs

Jul 10 / 55 KM / Salmon ID
164

Virginia Run for Cancer

Apr 24 / 24 Hours / Hampton VA
163

Zion 100

Apr 10 / 100 Miles / Virgin UT
162

Three Sisters Skyline

Oct 03 / 50 KM / Sisters OR
162

Antelope Island Buffalo Run

Mar 26 / 50 Miles / Syracuse UT
159

Cuyamaca 100k

Oct 02 / 100 KM / Julian CA
158

Seven Trails Ultra Festival

Apr 24 / 36 Hours / Damascus VA
156

Grindstone

Sep 17 / 100 Miles / Swoope VA
154

April Foolish 10 hr. Endurance Trail Race

Apr 18 / 10 Hours / Birdsboro PA
152

Silverton Alpine

Jul 10 / 50 KM / Silverton CO
152

Ultra-Trail Harricana™ of Canada (UTHC)

Sep 11 / 125 KM / La Malbaie QC
151

Never Summer 100K

Jul 30 / 60 KM / Gould CO
150

Rocky 50

Feb 13 / 50 KM / Huntsville TX
150

Buckeye Trail 50K - Summer

Jul 10 / 50 KM / Brecksville OH
149

Tillamook Burn Trail Run

May 02 / 50 KM / Timber OR
147

Afton Trail

Jul 03 / 50 KM / Hastings MN
146

Antelope Island Buffalo Run

Mar 26 / 50 KM / Syracuse UT
143

Finlayson Arm

Sep 10 / 50 KM / Victoria BC
142

Vermont 50

Sep 26 / 50 Miles / Brownsville VT
140

The Algonquin 50K

Feb 13 / 50 KM / Pocomoke City MD
140

Catoctin

Jul 10 / 50 KM / Frederick MD
140

Grizzly Ultra

Oct 09 / 50 KM / Canmore AB
140

Big Chief 50K

Jul 18 / 50 KM / Truckee CA
139

Run Rabbit Run

Sep 17 / 50 Miles / Steamboat Springs 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).

Killer Creek

  • Oct 30, 2021
  • Waxhw, NC
50 KM