2023 Biggest ultra running races

By finisher count. North American races only.
Finishers Event Winner
157

Dirty German Endurance Fest

May 20 / 50 KM / Philadelphia PA
156

Strolling Jim™

May 06 / 40 Miles / Wartrace TN
156

The Georgia Death Race

Mar 25 / 74 Miles / Blairsville GA
151

Snow Peaks 50 Mile Trail Run

Jun 10 / 50 Miles / Provo UT
150

Naked Nick

Dec 17 / 50 KM / Leesport PA
148

Mendocino Coast 50k

Apr 22 / 50 KM / Mendocino CA
147

Jemez Mountain

May 20 / 50 KM / Los Alamos NM
147

Kodiak Ultra Marathons

Oct 13 / 100 Miles / Big Bear Lake CA
146

Yeti 100 Mile Endurance Run

Sep 29 / 100 Miles / Abingdon VA
145

Boulder Field 100

Sep 09 / 50 KM / Jim Thorpe PA
145

Dinosaur Valley Endurance Run

Nov 18 / 100 KM / Glen Rose TX
144

Cabin Fever 50K

Feb 18 / 50 KM / New River Gorge National Park WV
144

Burning River

Jul 29 / 100 Miles / Cuyahoga Falls OH
142

Bryce Canyon

May 20 / 50 KM / Bryce Canyon UT
142

Mt. Taylor 50k

Sep 30 / 50 KM / Grants NM
142

Mohican

Jun 03 / 100 Miles / Loudonville OH
141

Silverton Alpine

Jul 08 / 50 KM / Silverton CO
141

Massanutten Mountain Trails 100 Mile Run

May 20 / 100 Miles / Fort Valley VA
141

Full Moon 25k/50k Run

Jul 22 / 50 KM / Perryville AR
140

Behind the Rocks Ultra

Mar 25 / 50 KM / Moab UT
140

Wild Florida Trail Run

Nov 18 / 50 KM / Canttell FL
140

Superior Fall Trail Races

Sep 08 / 50 Miles / Two Harbors MN
140

Bigfoot 200 Endurance Run

Aug 11 / 200 Miles / Mount St. Helens WA
139

Silver Falls

Nov 04 / 50 KM / Silverton OR
139

Cocodona

May 01 / 250 Miles / Black Canyon City AZ
139

Orcas Island 50k

Jan 28 / 50 KM / Orcas Island WA
139

Pinhoti

Nov 04 / 100 Miles / Sylacauga AL
139

Quicksilver

May 13 / 50 KM / San Jose CA
138

Catamount Ultra

Jun 24 / 50 KM / Stowe VT
138

Ragged 75 Stage Race and 50k

Aug 06 / 50 KM / Danbury NH
138

Bighorn

Jun 17 / 52 Miles / Dayton WY
138

Outrun 24

Apr 29 / 24 Hours / Kirtland OH
138

8 Hour Dream Endurance Race

Jul 15 / 8 Hours / Indianapolis IN
137

Tillamook Burn Trail Run

May 06 / 50 Miles / Timber OR
137

Canyon De Chelly Ultra

Oct 13 / 55 KM / Navajo Reservation AZ
137

Bull Run Run

Apr 15 / 50 Miles / Clifton VA
137

Skyline 50K

Aug 06 / 50 KM / San Leandro CA
136

Elk Valley Ultra

Jul 22 / 50 KM / Fernie BC
136

Badger Mountain Challenge

Mar 24 / 50 Miles / Richland WA
135

The Barkley Fall Classic

Sep 16 / 50 KM / Wartburg TN
135

Worlds End Ultramarathons

Jun 03 / 50 KM / Forksville PA
135

Pinellas Trail Challenge

Sep 02 / 46 Miles / St. Petersburg FL
134

Beaverhead Endurance Runs

Jul 15 / 100 KM / Salmon ID
134

Fonta Flora 50k

Oct 28 / 50 KM / Nebo NC
133

Finlayson Arm

Sep 09 / 50 KM / Victoria BC
133

Oil Creek 100 Trail Runs

Oct 07 / 50 KM / Titusville PA
132

West Line Winder

Sep 23 / 50 KM / Buena Vista CO
132

Mohican

Jun 03 / 50 Miles / Loudonville OH
132

Holcomb Valley trail Run

Jun 10 / 33 Miles / Big Bear Lake CA
132

Quad Rock 50

May 06 / 50 Miles / Fort Collins CO

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