2019 Biggest Ultrarunning Races

By finisher count. North American races only.
2019 2018 2017 2016 2015
Finishers Event Winner
276

Avalon Benefit 50

Jan 12 / 50 KM / Avalon CA
268

Bandera

Jan 05 / 100 KM / Bandera TX
227

Avalon Benefit 50

Jan 12 / 50 Miles / Avalon CA
218

Bandera

Jan 05 / 50 KM / Bandera TX
181

San Diego 50 and Trail Marathon

Jan 12 / 50 Miles / Escondido CA
131

Salem Lakeshore Frosty Fifty

Jan 05 / 50 KM / Winston-Salem NC
91

Frozen Gnome

Jan 12 / 50 KM / Crystal Lake IL
85

Retreat Repeat

Jan 05 / 8 Hours / Shulerville SC
79

South Mountains Marathons

Jan 12 / 50 KM / Connelly Springs NC
76

Bridle Trails Winter Trail Running Festival

Jan 12 / 50 KM / Bellevue WA
73

Harbison 50K

Jan 05 / 50 KM / Columbia SC
71

San Tan Scramble

Jan 05 / 50 KM / Queen Creek AZ
69

HURT 100

Jan 19 / 100 Miles / Honolulu HI
68

Yankee Springs Winter Challenge

Jan 05 / 50 KM / Middleville MI
64

New Year's One Day

Jan 05 / 6 Hours / San Francisco CA
64

Atlanta Fat Ass 50K

Jan 06 / 50 KM / Lithia Springs GA
61

The Great Scorpion Trail Run

Jan 05 / 50 KM / Meridian MS
55

Crystal Springs - Winter

Jan 20 / 50 KM / Woodside CA
54

Vista View 360

Jan 06 / 6 Hours / Davie FL
48

New Year's One Day

Jan 05 / 24 Hours / San Francisco CA
48

Frozen Sasquatch Trail Race

Jan 05 / 50 KM / Charleston WV
46

New Year's One Day

Jan 05 / 12 Hours / San Francisco CA
42

Rocks and Roots Trail Series #1

Jan 06 / 50 KM / Alum Creek State Park OH
41

St. Croix 40 Winter Ultra

Jan 12 / 40 Miles / Hinckley MN
36

Frozen Falcon

Jan 06 / 8 Hours / Falcon Lake MB
31

Cape Cod Frozen Fat Ass 50k

Jan 12 / 50 KM / Barnstable MA
31

Steep Ravine

Jan 12 / 50 KM / Stinson Beach CA
31

Swamp Stomper

Jan 20 / 50 KM / Millington TN
29

GAC FA50

Jan 05 / 50 KM / Topsfield MA
29

Wild Azalea Trail Challenge

Jan 05 / 27 Miles / Alexandria LA
24

La Cuesta Ranch Trail Run

Jan 05 / 28 Miles / San Luis Obispo CA
21

Watchung Winter

Jan 05 / 50 KM / Mountainside NJ
19

Willis River

Jan 06 / 50 KM / Cumberland VA
17

Wild Azalea Trail Challenge

Jan 05 / 50 Miles / Alexandria LA
16

Yankee Springs Winter Challenge

Jan 05 / 50 Miles / Middleville MI
14

Hilo to Volcano

Jan 05 / 50 KM / Hilo HI
10

MHRRC Recover From the Holidays 50k

Jan 13 / 50 KM / Staatsburg NY
10

Galveston 50k Beach Run

Jan 12 / 50 KM / Galveston TX
3

Holiday Series

Jan 04 / 50 KM / Las Cruces NM
3

Holiday Series

Jan 01 / 50 KM / Las Cruces NM
3

Holiday Series

Jan 03 / 50 KM / Las Cruces NM
2

Holiday Series

Jan 06 / 50 KM / Las Cruces NM
2

Holiday Series

Jan 05 / 50 KM / Las Cruces NM
2

Holiday Series

Jan 02 / 50 KM / Las Cruces NM
1

Ironhead Brothers

Jan 13 / 50 KM / Venice FL
Kodiak 100
  • Aug 17, 2019
  • Big Bear Lake, CA
50 KM 50 Miles 100 Miles