2021 Biggest Ultrarunning Races

By finisher count. North American races only.
2021 2020 2019 2018
Finishers Event Winner
152

Silverton Alpine

Jul 10 / 50 KM / Silverton 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
140

The Algonquin 50K

Feb 13 / 50 KM / Pocomoke City MD
140

Catoctin

Jul 10 / 50 KM / Frederick MD
140

Big Chief 50K

Jul 18 / 50 KM / Truckee CA
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
135

8 Hour Dream Endurance Race & Marathon

Jul 17 / 8 Hours / Indianapolis IN
134

3 Days at the Fair

May 15 / 100 Miles / Augusta NJ
133

Bandera

Jan 10 / 50 KM / Bandera TX
132

Yamacraw

May 22 / 50 KM / Stearns KY
131

Cayuga Trail

May 29 / 50 KM / Ithaca NY
131

Shore2Shore

Apr 10 / 50 KM / East Islip NY
130

Bigfoot 73M & 40M

Jul 10 / 40 Miles / Cougar WA
129

Tahoe Rim Trail

Jul 17 / 50 Miles / Carson City NV
129

Dirty German Endurance Fest

May 08 / 50 Miles / Philadelphia PA
128

Mt. Hood 50

Jul 11 / 50 KM / Timothy Lake OR
126

Twisted Fork

Jun 26 / 64 KM / Park City UT
126

The Georgia Death Race

Mar 27 / 74 Miles / Blairsville GA
125

Foothills Ultra (Conquer the Rock)

Mar 06 / 50 KM / Pickens SC
125

Moab Red Hot 55k/33k

Feb 13 / 55 KM / Moab UT
125

Prairie Spirit Trail

Mar 27 / 50 KM / Otawa KS
122

Grayson Highlands 50k

May 01 / 50 Miles / Mouth of Wilson VA
122

Whiskey Basin Trail Runs

Apr 17 / 60 KM / Prescott AZ
121

Black Hills 100

Jun 25 / 50 KM / Sturgis SD
121

Zumbro

Apr 08 / 34 Miles / Theilman MN
119

The Country Mile

Apr 10 / 48 Hours / Slater-Marietta SC
117

Holiday Lake

Feb 13 / 50 KM / Appomattox VA
116

Singletrack Maniac 50k

Apr 10 / 50 KM / Williamsburg VA
115

Mt. Hood 50

Jul 10 / 50 Miles / Timothy Lake OR
115

Traprock 50

Apr 17 / 50 KM / Simsbury CT
115

Windsor Castle 10-Hour

Jun 12 / 10 Hours / Smithfield VA
114

Many On The Genny

Jun 19 / 40 Miles / Castile NY
114

Rocky 50

Feb 13 / 50 Miles / Huntsville TX
113

Ghost Town Trail Challenge

Jun 19 / 50 KM / Blairsville PA
113

Night Train 50k

Jun 26 / 50 KM / Farmville VA
112

Bel Monte

Mar 13 / 50 KM / Waynesboro VA
112

Hardrock 100 Endurance Run

Jul 16 / 100 Miles / Silverton CO
111

River of No Return Endurance Runs

Jun 19 / 55 KM / Challis ID
111

Lake Martin 100

Mar 20 / 50 Miles / Alexander City AL

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).

Dahlgren Heritage Rail Trail 50K

  • Aug 7, 2021
  • King George, VA
50 KM