100Ms in the USA
Indianapolis, IN
Indy Piston Endurance Run
Jun 5, 2021
Logan, UT
Bear 100
Sep 23, 2022
Perryville, AR
Arkansas Traveller 100
Oct 2, 2021
Glen Rose, TX
Dinosaur Valley Endurance Run
Nov 20, 2021
Nov 21, 2021
Florahome, FL
Iron Horse
Feb 5, 2022
Fairbanks, AK
White Mountains 100
Mar 22, 2020
Kennesaw, GA
General 100
Oct 16, 2021
Sterling, IL
Hennepin Hundred
Oct 1, 2022
Big Bear Lake, CA
Kodiak Ultra Marathons
Aug 20, 2021
Aug 21, 2021
Fountain Hills, AZ
Javelina Jundred
Oct 30, 2021
Midway, UT
Valkyrie Relay
Jun 18, 2022
Birmingham, AL
Rumpshaker 5K
Mar 26, 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 18, 2021
Sep 17, 2021
Greeley, CO
Superhero Event
Sep 17, 2022
Easton, WA
Cascade Crest 100 Miler
Aug 28, 2021
Douglas, MA
Midstate Massive Ultra Trail
Oct 9, 2021
Abingdon, VA
Yeti 100 Mile Endurance Run
Sep 23, 2022
West Windsor, VT
Vermont 100 Endurance Race
Jul 17, 2021
Bristol, RI
Anchor Down Ultra
Aug 13, 2021
Falls of Rough, KY
Falls 100
Dec 5, 2020
Honolulu, HI
Hawaii Kai Ultra Run - Kalama Valley
Dec 19, 2020
Hawaii Kai Ultra Run - XTreme
Jul 24, 2021
HURT Trail 100
Jan 15, 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 15, 2021
East Peoria, IL
Farmdale Trail Run
Oct 9, 2021
Silverton, CO
Silverton Ultra Dirty
Aug 6, 2021
Hardrock 100
Jul 15, 2022
Granite Bay, CA
Rio Del Lago 100 Mile Endurance Run
Nov 6, 2021
Ardmore, OK
Lake Murray Endurance Run
Oct 23, 2021
Salt Lake City, UT
Wasatch Front 100 Mile Endurance Run
Sep 10, 2021
Raleigh, NC
Umstead 100 Mile Endurance Run
Apr 2, 2022
Lebanon, NH
100 on100 Relay
Aug 14, 2021
Lake Tahoe, NV
Tahoe Rim Trail Endurance Runs
Jul 16, 2022
Rocky Point, NY
Tesla Hertz Run
Oct 9, 2021
Toledo, OH
Miakonda Trail Ultra
Sep 4, 2021
Sebastian, FL
Saint Sebastian 100
Nov 13, 2021
Richland, WA
Badger Mountain Challenge
Mar 26, 2021
Lawrence, KS
Hawk Hundred
Sep 11, 2021
Sun Valley, ID
Standhope Ultra Challenge
Jul 23, 2022
Atlanta, GA
Underground Circus 50
Dec 26, 2021
Ottawa, KS
Prairie Spirit Trail Ultra Races
Mar 27, 2021
Kansas Rails-to-Trails Extravaganza
Oct 23, 2021
Steamboat Springs, CO
Run Rabbit Run
Sep 17, 2022
Sep 16, 2022
Chatsworth, GA
Endurance Hunter 100
Apr 9, 2022
DT 100 Stone Anvil
Apr 20, 2022
Apr 21, 2022
Apr 22, 2022
Apr 23, 2022
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 13, 2022
May 14, 2022
May 12, 2022
May 5, 2022
Rodeo Beach, CA
Headlands Hundred
Aug 19, 2021
Sylacauga, AL
Pinhoti 100
Nov 6, 2021
Virgil, NY
Virgil Crest Ultras
Sep 11, 2021
Las Cruces, NM
Chili Pepper Series
Mar 12, 2022
Mar 13, 2022
Ashland, OR
Pine to Palm 100 Mile Endurance Run
Sep 11, 2021
Los Angeles, CA
Cirque du Griffith Park
Sep 3, 2022
Willoughby Hills, OH
Burning River 100 Mile Endurance Run
Jul 30, 2022
McCall, ID
IMTUF100
Sep 11, 2021
Key West, FL
KEYS100
May 21, 2022
Hot Springs, AR
Run LOViT
Feb 26, 2022
Feb 25, 2022
Wildwood, MO
Ozark Foothills
Apr 9, 2022
Huntsville, TX
Rocky Raccoon 100 Trail Race
Feb 5, 2022
Plain, WA
Plain Endurance Runs
Sep 18, 2021
Pinckney, MI
Run Woodstock
Sep 10, 2021
Sep 11, 2021
Sep 12, 2021
Corona, CA
Run4Kids 24 Hour Running Party
Mar 14, 2020
Goodyear, AZ
Coldwater Rumble Trail Runs
Jan 15, 2022
Jackson, MI
Cascades 1 x 100M Challenge
May 1, 2021
Paso Robles, CA
Silver Moon Race
May 14, 2022
Kings Mountain, NC
Beast of the East 100
Dec 11, 2021
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
Hobe Sound, FL
Dunes 100
Apr 23, 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 23, 2021
Palm Springs, CA
Beyond Limits Ultra
Apr 7, 2022
Albion, IN
Indiana Trail 100
Oct 9, 2021
West Columbia, TX
Grit Ultra Endurance Challenge
Dec 31, 2021
Pinedale, WY
The Drift
Mar 13, 2022
Mar 11, 2022
Pensacola, FL
Wildcat Ultras
Sep 4, 2021
Cassoday, KS
Heartland
Oct 9, 2021
Oct 8, 2021
Triangle, VA
Devil Dog Ultras
Dec 4, 2021
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
Trabuco Canyon, CA
Baldy Marathons
May 9, 2020
Titusville, PA
Oil Creek 100 Trail Runs
Oct 16, 2021
Pelham, AL
Blood Rock 100 and 50
Dec 3, 2021
Fairplay, CO
Silverheels 100 Mile
Jul 9, 2022
Wilburton, OK
Outlaw 100
Feb 12, 2022
Wendover, UT
Salt Flats Endurance Runs
May 6, 2022
May 7, 2022
Tahlequah, OK
Pumpkin Holler Hunnerd
Oct 16, 2021
Waynesville, MO
Bad Dawg Ultra
Nov 27, 2021
Steelville, MO
Ozark Trail 100 Mile Endurance Run
Oct 30, 2021
Pine, AZ
Mogollon Monster 100
Sep 10, 2022
Clewiston, FL
Skydive Ultra Florida
Jan 29, 2022
Blue Ridge, GA
Endurance Hunter 100
Apr 9, 2022
Cruel Jewel 100
May 13, 2022
Dover, OH
Tuscazoar 100
Sep 4, 2021
Sturgis, SD
Black Hills 100
Jun 24, 2022
Jun 25, 2022
London, KY
War Hammer 100
Jun 10, 2022
Swoope, VA
Grindstone 100
Sep 17, 2021
Faust, UT
Pony Express Trail 100
Oct 15, 2021
Lanesboro, PA
Viaduct Trail Ultramarathon
Jul 9, 2022
Harrison, TN
Run Amok
Nov 14, 2020
Honey Creek, IA
Hitchcock Experience
Dec 11, 2021
Palmer Lake, CO
Kickers Endurance Run
Jul 17, 2021
Reedley, CA
Silver Moon Race
Apr 16, 2022
Ringgold, GA
General 100
Oct 16, 2021
Port Allen, LA
Children of the Cane
Nov 13, 2021
Burns, TN
Mo' Bell
Oct 9, 2021
Oct 10, 2021
Land O' Lakes, FL
Long Haul 100
Jan 15, 2022
Needville, TX
Brazos Bend 100
Dec 4, 2021
Wellsboro, PA
Pine Creek Challenge
Sep 10, 2022
Virgin, UT
Zion Ultra Marathons
Apr 9, 2022
Zion Ultras and Trail Half Marathon
Apr 9, 2022
Apr 10, 2022
Corolla, NC
Blackbeard's Revenge 100
Mar 26, 2022
St. Francisville, LA
Beast For A Day
Aug 28, 2021
Lincoln, CA
Ride To Walk Endurance Race
Sep 24, 2022
North Bonneville, WA
Strawberry Fields Forever
Jun 26, 2021
Belleville, WI
Badger Trail Races
Jul 31, 2021
Aug 1, 2021
Ville Platte, LA
Loup Garou Trail Run
Dec 4, 2021
Vienna, IL
Tunnel Hill 100
Nov 13, 2021
Nov 14, 2021
Shepherdsville, KY
Crooked Creek Ultra Trail Race
Dec 4, 2021
Dec 5, 2021
Blairstown, NJ
NJ Ultra Festival
Mar 27, 2021
Theilman, MN
Zumbro
Apr 8, 2022
Apr 9, 2022
Olallie Lake, OR
Mountain Lakes 100
Sep 24, 2022
High Ridge, MO
Shippey Endurance Runs
Jan 8, 2022
Jan 9, 2022
Custer, SD
Lean Horse
Aug 14, 2021
Aug 15, 2021
Canal Fulton, OH
Eagle Up Ultra
Jun 4, 2022
Carthage, MO
36 Hours Of Jack
Dec 7, 2019
Jamestown, TN
No Business 100
Oct 1, 2021
Olympic Valley, CA
Western States Endurance Run
Jun 25, 2022
Norton, VA
Cloudsplitter 100
Oct 16, 2021
Cat Spring, TX
Habanero Hundred
Aug 20, 2022
Booneville, IA
Booneville Backroads Ultra
Sep 4, 2021
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 6, 2021
Port Gamble, WA
Lumberjack Endurance Runs
Jun 12, 2021
Julian, CA
San Diego 100
Jun 3, 2022
Kingman, KS
Honey Badger 100M Ultra Road Race
Jul 10, 2021
Fort Davis, TX
Southwest 100
Mar 26, 2022
Littlefield, AZ
Grandmaster Ultras
Feb 11, 2022
Waterville, PA
Eastern States 100
Aug 13, 2022
Hatch, UT
Bryce Canyon Ultras
May 28, 2022
Teanaway, WA
Teanaway Country 100
Sep 11, 2021
Granger, IA
Stuffed Turkey Endurance Races
Nov 27, 2021
Chesterfield, MA
Chesterfield Gorge Ultra and 25K Race
Jul 10, 2021
Jul 11, 2021
La Sal, UT
UTE 100
Aug 12, 2022
Nathrop, CO
High Lonesome 100
Jul 30, 2021
Grand Mesa, CO
Grand Mesa Ultras
Jul 30, 2022
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| Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
City Location
1. 36 Hours Of Jack
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Past DateDec 7, 2019Saturday
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200K, 100M, 100K, 80K, 50K, 30K, 15K, 5K run
More Information
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Carthage, MO
Jasper County, MO
2. Run4Kids 24 Hour Running Party
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Past DateMar 14, 2020Saturday
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24H, 100M, 12H, 6H, 5K run
More Information
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Corona, CA
Riverside County, CA
3. White Mountains 100
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CancelledMar 22, 2020Sunday
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100M run
More Information
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Fairbanks, AK
Fairbanks North Star County, AK
4. Baldy Marathons
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Past DateMay 9, 2020Saturday
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100M, 100K, 50K trail run
More Information
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Trabuco Canyon, CA
Orange County, CA
5. 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
6. Falls 100
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Past DateDec 5, 2020Saturday
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100M, 50M, 26.2M, 13.1M trail run
More Information
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Falls of Rough, KY
Breckinridge County, KY
7. Hawaii Kai Ultra Run - Kalama Valley
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Past DateDec 19, 2020Saturday
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24H, 100M, 100K, 50M, 50K, 26.2M, 13.1M run
More Information
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Honolulu, HI
Honolulu County, HI
8. Zodiac Race Series
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Virtual OpenVirtual OnlyMar 21, 2021Sunday
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100M, 100K, 50M, 50K, 26.2M, 13.1M, 10K, 5K, 1M run
More InformationVirtual for 2021/2022
9. Badger Mountain Challenge
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Past DateMar 26, 2021Friday
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100M, 50M, 55K, 15K trail run
More Information
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Richland, WA
Benton County, WA
10. 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
11. Prairie Spirit Trail Ultra Races
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Past DateMar 27, 2021Saturday
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100M, 100K, 50M, 50K trail run
More Information
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Ottawa, KS
Franklin County, KS
12. Cascades 1 x 100M Challenge
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Past DateMay 1, 2021Saturday
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100M, 1M run
More Information
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Jackson, MI
Jackson County, MI
13. Pulse Endurance Runs
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Past DateMay 21, 2021Friday
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24H, 100M, 12H, 6H trail run
More Information
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Eagle, ID
Ada County, ID
14. Infinitus Races
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Past DateMay 28, 2021Friday
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100M trail run
More Information
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Brandon, VT
Rutland County, VT
15. Indy Piston Endurance Run
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Past DateJun 5, 2021Saturday
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100M, 100K, 50M, 50K run
More Information
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Indianapolis, IN
Marion County, IN
16. Lumberjack Endurance Runs
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Past DateJun 12, 2021Saturday
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100M, 100K, 50M trail run
More Information
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Port Gamble, WA
Kitsap County, WA
17. Strawberry Fields Forever
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Past DateJun 26, 2021Saturday
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30H, 100M, 100K, 50K, 10K trail run
More Information
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North Bonneville, WA
Skamania County, WA
18. Chesterfield Gorge Ultra and 25K Race
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Past DateJul 10, 2021Saturday
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100M, 100K, 50M, 50K trail run
More Information
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Chesterfield, MA
Hampshire County, MA
19. Honey Badger 100M Ultra Road Race
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Past DateJul 10, 2021Saturday
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100M run
More Information
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Kingman, KS
Kingman County, KS
20. 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
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.