100Ks in the USA
Indianapolis, IN
Indy Piston Endurance Run
Jun 3, 2023
Nashville, IN
Dances With Dirt - Gnaw Bone
May 18, 2024
Glen Rose, TX
High Hope Endurance Run
May 25, 2024
May 26, 2024
Dinosaur Valley Endurance Run
Nov 23, 2024
Nov 24, 2024
Big Bear Lake, CA
Kodiak Ultra Marathons
Oct 11, 2024
Oct 12, 2024
Fountain Hills, AZ
Javelina Jundred
Oct 28, 2023
Georgetown, TX
Texas Ultra Running Championship
Nov 16, 2024
Fayetteville, NY
Green Lakes Endurance Runs
Aug 26, 2023
Tyler, TX
Piney Woods Ultra
Sep 23, 2023
Honolulu, HI
Hawaii Kai Ultra Run - XTreme
Dec 16, 2023
Dubuque, IA
Mines of Spain 100
Oct 18, 2024
Colorado Springs, CO
Ring the Springs
Jun 17, 2023
Jun 18, 2023
Ardmore, OK
Lake Murray Endurance Run
Oct 28, 2023
Jackson, MS
Big Butts
Jul 20, 2024
Cerritos, CA
Orange Curtain
Jun 22, 2024
Jun 21, 2024
McClellanville, SC
Swamp Fox Ultra
Nov 18, 2023
Bandera, TX
Bandera Endurance Trail Race
Jan 13, 2024
Rocky Point, NY
Tesla Hertz Run
Oct 12, 2024
Flower Mound, TX
Knob Hills Trail Race
Sep 30, 2023
Toledo, OH
Miakonda Trail Ultra
Sep 2, 2023
Stinson Beach, CA
Miwok 100K
May 4, 2024
Stillwater, OK
Lake McMurtry Run
Apr 13, 2024
Shawnee, KS
Tale of Two Trails
Jul 15, 2023
Ottawa, KS
Kansas Rails-to-Trails Extravaganza
Oct 28, 2023
Prairie Spirit Trail Ultra Races
Mar 23, 2024
Springville, UT
Kat'cina Mosa 100K Mountain Run
Aug 3, 2024
Chatsworth, GA
Endurance Hunter 100
Apr 1, 2023
DT 100 Stone Anvil
Apr 17, 2024
Apr 18, 2024
Apr 19, 2024
Apr 20, 2024
Traverse City, MI
Traverse City Trail Running Festival
May 11, 2024
May 10, 2024
Virgil, NY
Virgil Crest Ultras
Sep 9, 2023
Las Cruces, NM
Sierra Vista Trail Runs
Mar 2, 2024
Homer, AK
Homer Epic
Mar 9, 2024
Ashland, OR
Siskiyou Out Back Trail Run
Jul 13, 2024
Comfort, TX
Dos Senderos
Mar 2, 2024
Norman, OK
Thunderbird Trail Run
Nov 11, 2023
Madison, WI
MadCity Ultras
Apr 20, 2024
Salmon, ID
Beaverhead Endurance Runs
Jul 13, 2024
Lake Hughes, CA
Leona Divide
Apr 20, 2024
Hilo, HI
Under the Moon
Jun 3, 2023
Ipswich, MA
TARC Stone Cat Trail Festival
Nov 2, 2024
Hot Springs, AR
Run LOViT
Feb 24, 2024
Feb 23, 2024
Bishop, CA
Bishop High Sierra Ultras
May 18, 2024
Brooksville, FL
Croom Zoom
Jan 6, 2024
Beaver Falls, PA
Rabid Raccoon 100
Mar 16, 2024
Huntsville, TX
Rocky Raccoon 100 Trail Race
Feb 3, 2024
Plain, WA
Plain Endurance Runs
Sep 9, 2023
Pinckney, MI
Run Woodstock
Sep 6, 2024
Sep 7, 2024
Sep 8, 2024
San Francisco, CA
Golden Gate Trail Classic
Nov 18, 2023
Nov 19, 2023
San Angelo, TX
Crazy Desert Trail Race
Mar 2, 2024
Oakridge, OR
Waldo 100K
Aug 3, 2024
New Preston, CT
Jack Bristol Lake Waramaug Ultra Races
Apr 28, 2024
La Grange, WI
Kettle Moraine 100 Endurance Runs
Jun 8, 2024
Cumberland, RI
Survival of the F.I.T.test 24 Hour Trail Ultra
Oct 21, 2023
Salinas, CA
Ordnance 100K
Jan 28, 2023
Albion, IN
Indiana Trail 100
Oct 12, 2024
San Antonio, TX
Medusa 100
Nov 4, 2023
West Columbia, TX
Grit Ultra Endurance Challenge
Dec 31, 2023
Massillon, OH
Whispering Grace 100
Nov 11, 2023
Jim Thorpe, PA
Boulder Field Ultra
Sep 9, 2023
San Diego, CA
Sycamore Canyon Trail Race
Feb 24, 2024
Pensacola, FL
Wildcat Ultras
Aug 31, 2024
Cassoday, KS
Heartland
Oct 14, 2023
Oct 13, 2023
Triangle, VA
Devil Dog Ultras
Dec 2, 2023
Hollidaysburg, PA
Ironstone 100K
Jul 13, 2024
New Gloucester, ME
Trail Festival at Pineland Farms
May 27, 2023
May 28, 2023
Castro Valley, CA
Dick Collins Firetrails
Sep 28, 2024
Titusville, PA
Oil Creek 100 Trail Runs
Oct 7, 2023
Fairplay, CO
Silverheels Trail Runs
Jul 13, 2024
Jul 14, 2024
Tahlequah, OK
Pumpkin Holler Hunnerd
Oct 21, 2023
Waynesville, MO
Bad Dawg Ultra
Aug 17, 2024
Mesquite, NV
Grandmaster Ultras
Feb 16, 2024
Feb 17, 2024
Blue Ridge, GA
Endurance Hunter 100
Apr 1, 2023
Beaver, UT
Tushars Mountain Runs
Jul 27, 2024
Ashland, NE
Double Down Endurance Races
Jun 3, 2023
Burns, TN
Mo' Bell
Oct 14, 2023
Oct 15, 2023
Paris, TX
Paris Pair
Sep 21, 2024
Wellsboro, PA
Pine Creek Challenge
Sep 9, 2023
Farmville, VA
Freight Train 50K/100K
Dec 2, 2023
Cascade Locks, OR
Gorge Waterfalls
Apr 14, 2024
Apr 13, 2024
Corolla, NC
Blackbeard's Revenge 100
Mar 23, 2024
Blue Diamond, NV
Red Rock Canyon 100K
Nov 9, 2024
Shenandoah, VA
Grindstone
Sep 20, 2024
Sep 21, 2024
North Bonneville, WA
Strawberry Fields Forever
Jun 24, 2023
Bolivar, OH
5 Lakes Ultra Race
Aug 5, 2023
Middleville, MI
Yankee Springs Trail Run
Jun 2, 2023
Jun 3, 2023
Belleville, WI
Badger Trail Races
Aug 3, 2024
Aug 4, 2024
Gold Beach, OR
Secret Beach 100K/50M
May 11, 2024
Jacksboro, TX
North Texas Ultra
Feb 17, 2024
Smithland, KY
Herzog 100
Apr 20, 2024
High Ridge, MO
The Shippey Endurance Runs
Jan 13, 2024
Jan 14, 2024
Mayer, AZ
Black Canyon Ultras
Feb 10, 2024
Waimea, HI
Under the Moon
Jun 3, 2023
Canal Fulton, OH
Eagle Up Ultra
Jun 1, 2024
Mayfield, OH
Conquer the Castle
Nov 4, 2023
Sylvan Grove, KS
Hell Creek 100
Sep 28, 2024
Foresthill, CA
Canyons Endurance Runs
Apr 26, 2024
Apr 27, 2024
Norton, VA
Cloudsplitter 100
Oct 14, 2023
Lakeshore, CA
China Peak Running Festival
Sep 9, 2023
Cat Spring, TX
Habanero Hundred
Aug 12, 2023
Natural Bridge, VA
Hellgate 100K
Dec 9, 2023
Booneville, IA
Booneville Backroads Ultra
Aug 31, 2024
Butte Meadows, CA
Loco Go Big or Go Home Challenge
Jun 1, 2024
Naples, NY
Twisted Branch Trail Run
Aug 24, 2024
Sky Valley, GA
Sky to Summit Trail Run
Oct 26, 2024
Port Gamble, WA
Lumberjack Endurance Runs
Jun 17, 2023
Hurricane, WV
Hurricane 100K
Sep 7, 2024
Logandale, NV
Fire Fest Ultra
Nov 23, 2023
Nov 24, 2023
Divide, CO
Great Divide Ultra
Jun 1, 2024
Jun 2, 2024
Keithville, LA
Screaming Monkey 100
Nov 4, 2023
Forksville, PA
Worlds End Ultramarathon
Jun 1, 2024
Fort Pierce, FL
Saint Lucie Skeeter Skoot
Nov 18, 2023
Quitaque, TX
Wild Canyon Ultra
Apr 6, 2024
Blacksburg, SC
Mountaineer Rumble 50K, 100K and 100 Miler
Nov 4, 2023
Forest City, IL
Temptation 200 Ultras
Aug 31, 2024
Sep 1, 2024
Vian, OK
Lake Vian Hilltop Run
Mar 2, 2024
Chesterfield, MA
Chesterfield Gorge Ultra and 25K Race
Jun 1, 2024
Jun 2, 2024
Apple Valley, UT
Zion Ultras
Apr 13, 2024
Apr 14, 2024
Vesuvius, VA
UROC
Apr 27, 2024
Silver Hill Meadow, VT
Vermont 100 Endurance Race
Jul 19, 2024
Hinckley, MN
Fire Tower Trail Races
Oct 5, 2024
Brazos Bend State Park, TX
Brazos Bend 50
Apr 6, 2024
Hyner Run State Park, PA
Black Forest Ultra 100K
Oct 6, 2024
Middlesex, NY
Great Hill Ultra
Jul 13, 2024
Durham, KS
Santa Fe Jornado
Jan 27, 2024
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Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
1. Ordnance 100K
-
Past DateJan 28, 2023Saturday
-
100K trail run
More Information
-
Salinas, CA
Monterey County, CA
2. Endurance Hunter 100
-
Past DateApr 1, 2023Saturday
-
100M, 100K trail run
More Information
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startBlue Ridge, GAfinishChatsworth, GAMurray County, GAFannin County, GA
3. Extreme North Dakota Sandhills Ultra Run Experience (END-SURE)
-
Past DateApr 1, 2023Saturday
-
100K, 50K, 25K trail run
More Information
-
McLeod, ND
Ransom County, ND
4. Trail Festival at Pineland Farms
-
Past DateMay 27, 2023Saturday
-
24H, 100K, 50K, 25K, 5K trail run | 24H relay
More Information
-
New Gloucester, ME
Cumberland County, ME
5. Double Down Endurance Races
-
Past DateJun 3, 2023Saturday
-
100K, 50K, 10K trail run
More Information
-
Ashland, NE
Saunders County, NE
6. Indy Piston Endurance Run
-
Past DateJun 3, 2023Saturday
-
100M, 100K, 50M, 50K, 13.1M run
Virtual OptionMore Information
-
Indianapolis, IN
Marion County, IN
7. Under the Moon
-
Past DateJun 3, 2023Saturday
-
200K, 100K, 50K run
More Information
-
startHilo, HIfinishWaimea, HIHawaii County, HIHawaii County, HI
8. Yankee Springs Trail Run
-
Past DateJun 3, 2023Saturday
-
100K, 50K, 25K trail run
More Information
-
Middleville, MI
Barry County, MI
9. Lumberjack Endurance Runs
-
Past DateJun 17, 2023Saturday
-
100M, 100K, 50M trail run
More Information
-
Port Gamble, WA
Kitsap County, WA
10. Ring the Springs
-
Past DateJun 17, 2023Saturday
-
100M, 100K trail run
More Information
-
Colorado Springs, CO
El Paso County, CO
11. Strawberry Fields Forever
-
Past DateJun 24, 2023Saturday
-
30H, 100M, 100K, 50K, 10K trail run
More Information
-
North Bonneville, WA
Skamania County, WA
12. Tale of Two Trails
-
Past DateJul 15, 2023Saturday
-
100K, 40M, 20M, 10M trail run
More Information
-
Shawnee, KS
Johnson County, KS
13. 5 Lakes Ultra Race
-
Past DateAug 5, 2023Saturday
-
200M, 100M, 100K, 50K trail run
More Information
-
Bolivar, OH
Tuscarawas County, OH
14. Habanero Hundred
-
Past DateAug 12, 2023Saturday
-
100M, 100K, 50K, 30K, 20K, 10K trail run | 100M, 100K relay
More Information
-
Cat Spring, TX
Austin County, TX
15. Green Lakes Endurance Runs
-
Past DateAug 26, 2023Saturday
-
100K, 50K trail run
More Information
-
Fayetteville, NY
Onondaga County, NY
16. Miakonda Trail Ultra
-
Past DateSep 2, 2023Saturday
-
24H, 100K, 15K trail run | 24H relay
More Information
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Toledo, OH
Lucas County, OH
17. Boulder Field Ultra
-
Past DateSep 9, 2023Saturday
-
100K, 50K, 18M trail run
More Information
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Jim Thorpe, PA
Carbon County, PA
18. China Peak Running Festival
-
Past DateSep 9, 2023Saturday
-
100K, 50K, 25K, 10K trail run
More Information
-
Lakeshore, CA
Fresno County, CA
19. Pine Creek Challenge
-
Past DateSep 9, 2023Saturday
-
100M, 100K, 50M, 26.2M trail run | 100M relay
More Information
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Wellsboro, PA
Tioga County, PA
20. Plain Endurance Runs
-
Past DateSep 9, 2023Saturday
-
100M, 100K trail run
More Information
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Plain, WA
Chelan County, WA
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.