2021 Biggest Ultrarunning Races

By finisher count. North American races only.
2021 2020 2019 2018
Finishers Event Winner
90

Potawatomi

Apr 09 / 50 Miles / Pekin IL
89

Clinton Lake

Mar 27 / 30 Miles / DeWitt IL
88

Running the Rose

Jan 23 / 54 KM / Tyler TX
86

Delano Park

Mar 06 / 12 Hours / Decatur AL
85

Peterson Ridge Rumble

Apr 11 / 36 Miles / Sisters OR
84

Carl Touchstone Memorial Mississippi Trail 50

Mar 06 / 50 KM / Laurel MS
83

Hellcat 50km Endurance Run

Jan 23 / 50 KM / Green Cove Springs FL
83

The Ranch 50k

Mar 06 / 50 KM / Escondido CA
81

Lake McMurtry Run

Apr 10 / 50 KM / Stillwater OK
78

Umstead

Mar 27 / 50 Miles / Raleigh NC
78

Ozark Foothills

Apr 10 / 50 KM / Wildwood MO
78

Pemberton Trail

Feb 13 / 50 KM / Fountain Hills AZ
76

South Mountains Marathons

Jan 30 / 50 KM / Connelly Springs NC
76

Umstead

Mar 27 / 100 Miles / Raleigh NC
74

Bel Monte

Mar 13 / 50 Miles / Waynesboro VA
73

Elephant Mountain

Feb 06 / 50 KM / Cave Creek AZ
72

Harbison 50K

Jan 09 / 50 KM / Columbia SC
72

Brazos Bend 50

Apr 03 / 50 Miles / Needville TX
71

Chicago Lakefront: George Cheung Memorial

Mar 27 / 50 KM / Chicago IL
71

Badger Mountain Challenge

Mar 26 / 100 Miles / Richland WA
69

Get Lucky 50/50

Mar 20 / 50 KM / CANAL FULTON OH
68

Rattler Trail Race

Apr 10 / 50 KM / Colorado Springs CO
68

ICY-8

Feb 06 / 8 Hours / Lake Anna State Park VA
67

Forgotten Florida 45 Mile / 15 Mile

Feb 06 / 45 Miles / Christmas FL
64

Naked Bavarian

Mar 27 / 40 Miles / Leesport PA
64

San Tan Scramble

Jan 02 / 50 KM / Queen Creek AZ
64

Long Creek 60k

Apr 03 / 60 KM / Virginia Beach VA
63

March Maniac 11 hour Endurance Run

Mar 13 / 11 Hours / Williamsburg VA
59

Howard Aslinger Memorial Endurance Run

Mar 19 / 24 Hours / Cape Girardeau MO
59

Arches Ultra

Jan 30 / 50 Miles / Moab UT
59

Seneca Greenway Trail Marathon & 50K

Mar 13 / 28 Miles / Gaithersburg MD
56

Flatlanders Canyon Crash Trail Runs

Mar 13 / 50 KM / Lumpkin GA
56

OPSF5050

Mar 27 / 50 KM / Spencer IN
56

NC Fat Ass 50k

Jan 30 / 50 KM / Ellerbee NC
55

Mountains to Sea Challenge

Apr 11 / 50 KM / Raleigh NC
55

Yeti 7/11 Hour Endurance Challenge

Mar 14 / 11 Hours / Lithia Springs GA
55

Antelope Island Buffalo Run

Mar 26 / 100 Miles / Syracuse UT
55

The Country Mile

Apr 10 / 24 Hours / Slater-Marietta SC
54

Elephant Mountain

Feb 06 / 50 Miles / Cave Creek AZ
53

Uwharrie Mountain Run

Feb 06 / 40 Miles / Ophir NC
53

3 Days of Syllamo

Mar 20 / 50 Miles / Blanchard Springs AR
53

Cold Mountain 50k and 25k

Mar 13 / 50 KM / Canton NC
53

Ozark Highlands Endurance Run

Mar 06 / 50 KM / Norfork AR
53

MST 50k, 50 and 100 mile

Mar 20 / 50 KM / Durham NC
52

David's Trail Endurance Run

Jan 23 / 50 KM / Mountain Home AR
52

Coldwater Rumble

Jan 16 / 52 Miles / Goodyear AZ
52

Eagle Ridge

Feb 13 / 50 KM / Guntersville AL
51

Squatchapple

Apr 10 / 33 Miles / West Orange NJ
51

Get Lucky 50/50

Mar 20 / 50 Miles / CANAL FULTON OH
50

Lost Falls

Mar 13 / 50 KM / Fort Payne 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).

Last Call 50 Miler

  • Jul 11, 2021
  • Fairplay, CO
53.5 Miles