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
403

Mountain Mist

Jan 23 / 50 KM / Huntsville AL
364

Black Canyon Ultras

Feb 14 / 100 KM / Mayer AZ
293

Bandera

Jan 09 / 100 KM / Bandera TX
252

Rocky Raccoon

Feb 06 / 100 Miles / Huntsville TX
217

Zion 100

Apr 10 / 100 KM / Virgin UT
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
200

Crown King Scramble

Mar 27 / 50 KM / Phoenix AZ
192

Terrapin Mountain

Mar 20 / 50 KM / Big Island VA
165

Badger Mountain Challenge

Mar 26 / 50 Miles / Richland WA
163

Zion 100

Apr 10 / 100 Miles / Virgin UT
162

Antelope Island Buffalo Run

Mar 26 / 50 Miles / Syracuse UT
150

Rocky 50

Feb 13 / 50 KM / Huntsville TX
146

Antelope Island Buffalo Run

Mar 26 / 50 KM / Syracuse UT
140

The Algonquin 50K

Feb 13 / 50 KM / Pocomoke City MD
138

Brazos Bend 50

Apr 03 / 50 KM / Needville TX
133

Bandera

Jan 10 / 50 KM / Bandera TX
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

Whiskey Basin Trail Runs

Apr 17 / 60 KM / Prescott AZ
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
114

Rocky 50

Feb 13 / 50 Miles / Huntsville TX
112

Bel Monte

Mar 13 / 50 KM / Waynesboro VA
111

Lake Martin 100

Mar 20 / 50 Miles / Alexander City AL
111

Ouachita Trail

Apr 17 / 50 KM / Little Rock AR
111

Fools 50k & 25k Trail Run

Apr 03 / 50 KM / Peninsula OH
109

Badger Mountain Challenge

Mar 26 / 50 KM / Richland WA
107

Naked Nick

Jan 31 / 50 KM / Leesport PA
106

Whiskey Basin Trail Runs

Apr 17 / 90 KM / Prescott AZ
106

Prairie Spirit Trail

Mar 27 / 50 Miles / Otawa KS
105

Naked Prussian

Mar 27 / 50 Miles / Leesport PA
105

Coldwater Rumble

Jan 16 / 52 KM / Goodyear AZ
105

Trail Mix

Apr 17 / 50 KM / Rockford MN
102

Bandera

Jan 09 / 50 KM / Bandera TX
101

Fondren Urban Ultra

Apr 17 / 12 Hours / Jackson MS
101

Arches Ultra

Jan 30 / 50 KM / Moab UT
101

Mesquite Canyon

Mar 06 / 50 KM / Waddell AZ
100

Sylamore Trail

Feb 13 / 50 KM / Allison AR
99

Ohio's Backyard Ultra

Mar 20 / Variable Hours / Lucasville OH
99

Lake Martin 100

Mar 20 / 27 Miles / Alexander City AL
99

Rocky Raccoon

Feb 06 / 100 KM / Huntsville TX
96

Hells Hills

Apr 03 / 50 KM / Smithville TX
96

Long Haul 100

Jan 16 / 100 Miles / Wesley Chapel FL

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).

Sangre de Cristo Ultras

  • Sep 25, 2021
  • Westcliffe, CO
50 KM 50 Miles 100 KM 100 Miles 200 Miles