100Ms in the USA
Indianapolis, IN
Indy Piston Endurance Run
Jun 4, 2022
Logan, UT
Bear 100
Sep 23, 2022
Perryville, AR
Arkansas Traveller 100
Oct 1, 2022
Glen Rose, TX
Dinosaur Valley Endurance Run
Nov 19, 2022
Nov 20, 2022
Florahome, FL
Iron Horse
Feb 5, 2022
Fairbanks, AK
White Mountains 100
Mar 27, 2022
Kennesaw, GA
General 100
Oct 16, 2021
Sterling, IL
Hennepin Hundred
Oct 1, 2022
Richmond, VA
Rev3 Cap Trail 100 Relay Run
Apr 9, 2022
Big Bear Lake, CA
Kodiak Ultra Marathons
Aug 19, 2022
Aug 20, 2022
Fountain Hills, AZ
Javelina Jundred
Oct 29, 2022
Midway, UT
Valkyrie Relay
Jun 18, 2022
Anchorage, AK
Susitna 100 And Little Su 50K
Feb 19, 2022
Alexander City, AL
Lake Martin 100
Mar 26, 2022
Dalton, GA
Georgia Jewel
Sep 17, 2022
Sep 16, 2022
Easton, WA
Cascade Crest 100 Miler
Jul 22, 2022
Douglas, MA
Midstate Massive Ultra Trail
Oct 8, 2022
Abingdon, VA
Yeti 100 Mile Endurance Run
Sep 30, 2022
Bristol, RI
Anchor Down Ultra
Aug 12, 2022
Ft. Valley, VA
Massanutten Mountain Trails 100 Mile Run
May 14, 2022
Old Dominion 100 Mile Endurance Run
Jun 4, 2022
Dubuque, IA
Mines of Spain 100
Oct 14, 2022
Colorado Springs, CO
Ring the Springs
Jun 11, 2022
East Peoria, IL
Farmdale Trail Run
Oct 8, 2022
Granite Bay, CA
Rio Del Lago 100 Mile Endurance Run
Nov 5, 2022
Ardmore, OK
Lake Murray Endurance Run
Oct 29, 2022
Raleigh, NC
Umstead 100 Mile Endurance Run
Apr 1, 2023
Lake Tahoe, NV
Tahoe Rim Trail Endurance Runs
Jul 16, 2022
Rocky Point, NY
Tesla Hertz Run
Oct 8, 2022
Sebastian, FL
Saint Sebastian 100
Nov 13, 2021
Richland, WA
Badger Mountain Challenge
Mar 25, 2022
Stowe, VT
100 on100 Relay
Aug 13, 2022
Lawrence, KS
Hawk Hundred
Sep 10, 2022
Ottawa, KS
Prairie Spirit Trail Ultra Races
Mar 26, 2022
Kansas Rails-to-Trails Extravaganza
Oct 29, 2022
Steamboat Springs, CO
Run Rabbit Run
Sep 17, 2022
Sep 16, 2022
Chatsworth, GA
DT 100 Stone Anvil
Apr 20, 2022
Apr 21, 2022
Apr 22, 2022
Apr 23, 2022
Endurance Hunter 100
Apr 1, 2023
Traverse City, MI
Lighthouse 100
Jun 11, 2022
Pittsfield, VT
Snow Devil Snowshoe Race / Winter Ultra
Feb 5, 2022
Feb 4, 2022
Peak Bloodroot Ultra
May 12, 2023
May 13, 2023
May 10, 2022
Rodeo Beach, CA
Headlands Hundred
Aug 11, 2022
Sylacauga, AL
Pinhoti 100
Nov 5, 2022
Virgil, NY
Virgil Crest Ultras
Sep 10, 2022
Ashland, OR
Pine to Palm
Sep 10, 2022
Los Angeles, CA
Cirque du Griffith Park
Sep 3, 2022
Willoughby Hills, OH
Burning River 100 Mile Endurance Run
Jul 30, 2022
Heflin, AL
Pinhoti 100
Nov 5, 2022
McCall, ID
IMTUF100
Sep 10, 2022
Key West, FL
KEYS100
May 21, 2022
Hot Springs, AR
Run LOViT
Feb 26, 2022
Feb 25, 2022
Wildwood, MO
Ozark Foothills
Apr 15, 2023
Apr 16, 2023
Huntsville, TX
Rocky Raccoon 100 Trail Race
Feb 4, 2023
Plain, WA
Plain Endurance Runs
Sep 17, 2022
Pinckney, MI
Run Woodstock
Sep 9, 2022
Sep 10, 2022
Sep 11, 2022
Smyrna, GA
Underground Circus 100
Jun 4, 2022
Corona, CA
Run4Kids 24 Hour Running Party
Mar 12, 2022
Goodyear, AZ
Coldwater Rumble Trail Runs
Jan 14, 2023
Paso Robles, CA
Silver Moon Race: Paso Robles
May 14, 2022
Kings Mountain, NC
Beast of the East 100
Dec 10, 2022
Wrightwood, CA
Angeles Crest 100 Mile Endurance Run
Aug 6, 2022
Las Vegas, NV
Jackpot Ultra Running Festival
Feb 18, 2022
Feb 19, 2022
Running with the Devil
Jun 18, 2022
La Grange, WI
Kettle Moraine 100 Endurance Runs
Jun 11, 2022
Vernal, UT
McCoy Flat Death Race 4.1M 100M
Jul 10, 2021
Cumberland, RI
Survival of the F.I.T.test 24 Hour Trail Ultra
Oct 22, 2022
Palm Springs, CA
Beyond Limits Ultra
Apr 7, 2022
Albion, IN
Indiana Trail 100
Oct 8, 2022
West Columbia, TX
Grit Ultra Endurance Challenge
Dec 31, 2022
Pinedale, WY
The Drift
Mar 13, 2022
Mar 11, 2022
Pensacola, FL
Wildcat Ultras
Sep 3, 2022
Cassoday, KS
Heartland
Oct 8, 2022
Oct 7, 2022
Triangle, VA
Devil Dog Ultras
Dec 3, 2022
Leadville, CO
Leadville Trail 100 Mile Run
Aug 20, 2022
Pocatello, ID
Scout Mountain Ultras
Jun 4, 2022
Jun 3, 2022
Loudonville, OH
Mohican 100 Mile, 50 Mile and Marathon Runs
Jun 4, 2022
Sonoita, AZ
Old Pueblo Endurance Runs
Mar 5, 2022
Titusville, PA
Oil Creek 100 Trail Runs
Oct 15, 2022
Pelham, AL
Blood Rock 100 and 50
Dec 2, 2022
Fairplay, CO
Silverheels 100 Mile
Jul 9, 2022
Wilburton, OK
Outlaw 100
Feb 11, 2023
Wendover, UT
Salt Flats Endurance Runs
May 5, 2023
May 6, 2023
Tahlequah, OK
Pumpkin Holler Hunnerd
Oct 15, 2022
Waynesville, MO
Bad Dawg Ultra
Aug 20, 2022
Steelville, MO
Ozark Trail 100 Mile Endurance Run
Oct 29, 2022
Pine, AZ
Mogollon Monster 100
Sep 10, 2022
Clewiston, FL
Skydive Ultra Florida
Jan 28, 2023
Blue Ridge, GA
Cruel Jewel 100
May 13, 2022
Endurance Hunter 100
Apr 1, 2023
Dover, OH
Tuscazoar 100
Sep 3, 2022
Sturgis, SD
Black Hills 100
Jun 24, 2022
Jun 25, 2022
London, KY
War Hammer 100
Jun 10, 2022
Swoope, VA
Grindstone 100
Sep 16, 2022
Faust, UT
Pony Express Trail 100
Oct 14, 2022
Lanesboro, PA
Viaduct Trail Ultramarathon
Jul 9, 2022
Kaysville, UT
Wasatch Front 100 Mile Endurance Run
Sep 9, 2022
Harrison, TN
Run Amok
Nov 14, 2020
Honey Creek, IA
Hitchcock Experience
Dec 10, 2022
Palmer Lake, CO
Kickers Endurance Run
Jul 17, 2021
Ludlow, VT
100 on100 Relay
Aug 13, 2022
Reedley, CA
Silver Moon Race: Reedley
Apr 8, 2023
Ringgold, GA
General 100
Oct 16, 2021
Port Allen, LA
Children of the Cane
Oct 29, 2022
Burns, TN
Mo' Bell
Oct 8, 2022
Oct 9, 2022
Land O' Lakes, FL
Long Haul 100
Jan 14, 2023
Needville, TX
Brazos Bend 100
Dec 3, 2022
Wellsboro, PA
Pine Creek Challenge
Sep 10, 2022
Corolla, NC
Blackbeard's Revenge 100
Mar 25, 2023
St. Francisville, LA
Beast For A Day
Dec 18, 2021
Lincoln, CA
Ride To Walk Endurance Race
Sep 24, 2022
North Bonneville, WA
Strawberry Fields Forever
Jun 11, 2022
Ketchum, ID
Standhope Ultra Challenge
Jul 23, 2022
Belleville, WI
Badger Trail Races
Jul 30, 2022
Jul 31, 2022
Ville Platte, LA
Loup Garou Trail Run
Dec 3, 2022
Vienna, IL
Tunnel Hill 100
Nov 12, 2022
Nov 13, 2022
Shepherdsville, KY
Crooked Creek Ultra Trail Race
Dec 3, 2022
Dec 4, 2022
Blairstown, NJ
NJ Ultra Festival
Mar 27, 2021
Theilman, MN
Zumbro Endurance Run
Apr 8, 2022
Apr 9, 2022
Olallie Lake, OR
Mountain Lakes 100
Sep 24, 2022
High Ridge, MO
Shippey Endurance Runs
Jan 14, 2023
Jan 15, 2023
Custer, SD
Lean Horse
Aug 20, 2022
Aug 21, 2022
Canal Fulton, OH
Eagle Up Ultra
Jun 4, 2022
Hookstown, PA
Rabid Raccoon 100
Mar 19, 2022
Sylvan Grove, KS
Hell Creek 100
Sep 30, 2022
Oct 1, 2022
Jamestown, TN
No Business 100
Oct 14, 2022
Olympic Valley, CA
Western States Endurance Run
Jun 25, 2022
Norton, VA
Cloudsplitter 100
Oct 15, 2022
Cat Spring, TX
Habanero Hundred
Aug 20, 2022
Booneville, IA
Booneville Backroads Ultra
Sep 3, 2022
Butte Meadows, CA
Loco Go Big or Go Home Challenge
Jun 4, 2022
Hewitt, NJ
Wawayanda Wonderful 100
Sep 10, 2022
Oak Hill, WV
Rim to River 100
Nov 5, 2022
Port Gamble, WA
Lumberjack Endurance Runs
Jun 11, 2022
Julian, CA
San Diego 100
Jun 3, 2022
Divide, CO
Great Divide Ultra
May 21, 2022
Fort Davis, TX
Southwest 100
Mar 26, 2022
Littlefield, AZ
Grandmaster Ultras
Feb 10, 2023
Waterville, PA
Eastern States 100
Aug 13, 2022
Hatch, UT
Bryce Canyon Ultras
May 28, 2022
Teanaway, WA
Teanaway Country 100
Sep 17, 2022
Granger, IA
Stuffed Turkey Endurance Races
Nov 26, 2022
Chesterfield, MA
Chesterfield Gorge Ultra and 25K Race
Jun 4, 2022
Jun 5, 2022
Apple Valley, UT
Zion Ultra Marathons
Apr 8, 2023
Apr 9, 2023
La Sal, UT
UTE 100
Aug 12, 2022
Grand Mesa, CO
Grand Mesa Ultras
Jul 30, 2022
Mt Princeton, CO
High Lonesome 100
Jul 22, 2022
Silver Hill Meadow, VT
Vermont 100 Endurance Race
Jul 16, 2022
Christmas, FL
Forgotten Florida
Feb 4, 2023
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| Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
City Location
Featured Listing
1. Loco Go Big or Go Home Challenge
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Jun 4, 2022Saturday
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100M, 100K, 50K, 13.1M, 10K run
More Information
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Butte Meadows, CA
Butte County, CA
1. Regis Stampede
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Past DateMay 3, 2020Sunday
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100M, 75M, 50M run
More Information
Virtual for 2022 -
Stayton, OR
Marion County, OR
2. Run Amok
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Past DateNov 14, 2020Saturday
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100M, 100K, 50M, 50K, 26.2M, 13.1M, 10K, 5K run | kids run
More Information
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Harrison, TN
Hamilton County, TN
3. NJ Ultra Festival
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Past DateMar 27, 2021Saturday
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100M, 100K, 50M, 50K, 26.2M, 13.1M trail run
More Information
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Blairstown, NJ
Warren County, NJ
4. McCoy Flat Death Race 4.1M 100M
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Past DateJul 10, 2021Saturday
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100M, 4.1M run | last man standing
More Information
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Vernal, UT
Uintah County, UT
5. Kickers Endurance Run
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CancelledJul 17, 2021Saturday
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100M, 100K, 50M, 50K trail run
More Information
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Palmer Lake, CO
El Paso County, CO
6. General 100
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CancelledOct 16, 2021Saturday
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100M relay
More Information
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startKennesaw, GAfinishRinggold, GACobb County, GACatoosa County, GA
7. Saint Sebastian 100
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Past DateNov 13, 2021Saturday
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100M, 50M trail run
More Information
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Sebastian, FL
Indian River County, FL
8. Beast For A Day
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Past DateDec 18, 2021Saturday
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100M, 12H, 6H, 3H, 5.6M run
More Information
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St. Francisville, LA
West Feliciana County, LA
9. Regis Stampede
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Virtual OpenPast DateJan 1, 2022Saturday
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100M, 75M, 50M run
More InformationVirtual for 2022
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Stayton, OR
Marion County, OR
10. Frozen: H3
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Past DateJan 13, 2022Thursday
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100M, 100K, 60K, 16.3M trail run | 100M relay
More Information
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Bethera, SC
Berkeley County, SC
11. Snow Devil Snowshoe Race / Winter Ultra
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Past DateFeb 4, 2022Friday
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100M trail run
More Information
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Pittsfield, VT
Rutland County, VT
12. Iron Horse
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Past DateFeb 5, 2022Saturday
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100M, 100K, 50M trail run
More Information
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Florahome, FL
Putnam County, FL
13. Jackpot Ultra Running Festival
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Past DateFeb 18, 2022Friday
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48H, 100M run
More Information
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Las Vegas, NV
Clark County, NV
14. Jackpot Ultra Running Festival
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Past DateFeb 19, 2022Saturday
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24H, 100M, 12H, 50M, 6H run
More Information
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Las Vegas, NV
Clark County, NV
15. Susitna 100 And Little Su 50K
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Past DateFeb 19, 2022Saturday
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100M, 50K trail run
More Information
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Anchorage, AK
Anchorage County, AK
16. Run LOViT
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Past DateFeb 25, 2022Friday
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100M run
More Information
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Hot Springs, AR
Garland County, AR
17. Old Pueblo Endurance Runs
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Past DateMar 5, 2022Saturday
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100M, 75M, 50M, 25M trail run
More Information
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Sonoita, AZ
Santa Cruz County, AZ
18. The Drift
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Past DateMar 11, 2022Friday
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100M trail run
More Information
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Pinedale, WY
Sublette County, WY
19. Run4Kids 24 Hour Running Party
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Past DateMar 12, 2022Saturday
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24H, 100M, 12H, 6H, 5K run
More Information
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Corona, CA
Riverside County, CA
20. Pulse Endurance Runs
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Past DateMar 18, 2022Friday
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24H, 100M, 12H, 6H trail run
More Information
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Eagle, ID
Ada County, ID
For the love of all that Is good And moisture wicking...
Though we Try To be accurate And On top Of things... Race details can change When we aren't lookin. And once in a while we simply make a mistake.
ALWAYS visit the race's website for the most complete and accurate race information.
ALWAYS visit the race's website for the most complete and accurate race information.