100Ks in the USA
Indianapolis, IN
Indy Piston Endurance Run
Jun 3, 2023
Nashville, IN
Dances With Dirt - Gnaw Bone
May 20, 2023
Glen Rose, TX
Dinosaur Valley Endurance Run
Nov 18, 2023
Nov 19, 2023
Big Bear Lake, CA
Kodiak Ultra Marathons
Aug 19, 2022
Aug 20, 2022
Fountain Hills, AZ
Javelina Jundred
Oct 28, 2023
Fayetteville, NY
Green Lakes Endurance Runs
Aug 26, 2023
Tyler, TX
Piney Woods Ultra
Sep 23, 2023
Honolulu, HI
Hawaii Kai Ultra Run - XTreme
Jul 23, 2022
Dubuque, IA
Mines of Spain 100
Oct 20, 2023
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 15, 2023
Cerritos, CA
Orange Curtain
Jul 1, 2023
Jun 30, 2023
McClellanville, SC
Swamp Fox Ultra
Nov 18, 2023
Bandera, TX
Bandera Endurance Trail Race
Jan 13, 2024
Rocky Point, NY
Tesla Hertz Run
Oct 7, 2023
Flower Mound, TX
Knob Hills Trail Race
Oct 1, 2022
Toledo, OH
Miakonda Trail Ultra
Sep 2, 2023
Stinson Beach, CA
Miwok 100K
May 6, 2023
Stillwater, OK
Lake McMurtry Run
Apr 8, 2023
Shawnee, KS
Tale of Two Trails
Jul 15, 2023
Ottawa, KS
Prairie Spirit Trail Ultra Races
Mar 25, 2023
Kansas Rails-to-Trails Extravaganza
Oct 28, 2023
Springville, UT
Kat'cina Mosa 100K Mountain Run
Aug 5, 2023
Chatsworth, GA
Endurance Hunter 100
Apr 1, 2023
DT 100 Stone Anvil
Apr 19, 2023
Apr 20, 2023
Apr 21, 2023
Apr 22, 2023
Traverse City, MI
Traverse City Trail Running Festival
May 13, 2023
May 12, 2023
Virgil, NY
Virgil Crest Ultras
Sep 9, 2023
Las Cruces, NM
Sierra Vista Trail Runs
Mar 11, 2023
Homer, AK
Homer Epic
Mar 11, 2023
Ashland, OR
Siskiyou Out Back Trail Run
Jul 8, 2023
Comfort, TX
Dos Senderos
Mar 4, 2023
Norman, OK
Thunderbird Trail Run
Nov 11, 2023
Salmon, ID
Beaverhead Endurance Runs
Jul 15, 2023
Lake Hughes, CA
Leona Divide
Apr 22, 2023
Hilo, HI
Under the Moon
Jun 3, 2023
Hot Springs, AR
Run LOViT
Feb 25, 2023
Feb 24, 2023
Bishop, CA
Bishop High Sierra Ultras
May 20, 2023
Brooksville, FL
Croom Zoom
Jan 7, 2023
Huntsville, TX
Rocky Raccoon 100 Trail Race
Feb 3, 2024
Plain, WA
Plain Endurance Runs
Sep 9, 2023
Kirkwood, CA
Kirkwood's Ultras
Aug 5, 2023
Pinckney, MI
Run Woodstock
Sep 8, 2023
Sep 9, 2023
Sep 10, 2023
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 5, 2023
New Preston, CT
Jack Bristol Lake Waramaug Ultra Races
Apr 30, 2023
La Grange, WI
Kettle Moraine 100 Endurance Runs
Jun 10, 2023
Cumberland, RI
Survival of the F.I.T.test 24 Hour Trail Ultra
Oct 22, 2022
Salinas, CA
Ordnance 100K
Jan 28, 2023
Albion, IN
Indiana Trail 100
Oct 14, 2023
West Columbia, TX
Grit Ultra Endurance Challenge
Dec 31, 2022
Jim Thorpe, PA
Boulder Field Ultra
Sep 9, 2023
San Diego, CA
Sycamore Canyon Trail Race
Feb 24, 2024
Pensacola, FL
Wildcat Ultras
Sep 2, 2023
Cassoday, KS
Heartland
Oct 14, 2023
Oct 13, 2023
Triangle, VA
Devil Dog Ultras
Dec 3, 2022
Hollidaysburg, PA
Ironstone 100K
Jul 8, 2023
New Gloucester, ME
Trail Festival at Pineland Farms
May 27, 2023
May 28, 2023
West Milford, NJ
Highlands Trail Festival
May 14, 2022
Castro Valley, CA
Dick Collins Firetrails
Sep 30, 2023
Titusville, PA
Oil Creek 100 Trail Runs
Oct 7, 2023
Tahlequah, OK
Pumpkin Holler Hunnerd
Oct 21, 2023
Waynesville, MO
Bad Dawg Ultra
Aug 19, 2023
Mesquite, NV
Grandmaster Ultras
Feb 16, 2024
Feb 17, 2024
Pine, AZ
Zane Grey 100K
Apr 22, 2023
Blue Ridge, GA
Endurance Hunter 100
Apr 1, 2023
Beaver, UT
Tushars Mountain Runs
Jul 29, 2023
Harrison, TN
Run Amok
Nov 5, 2022
Ashland, NE
Double Down Endurance Races
Jun 3, 2023
Cross Plains, WI
Ice Age Trail Odyssey
Oct 15, 2022
Oct 16, 2022
Port Allen, LA
Children of the Cane
Oct 29, 2022
Burns, TN
Mo' Bell
Oct 14, 2023
Oct 15, 2023
Paris, TX
Paris Pair
Sep 23, 2023
Wellsboro, PA
Pine Creek Challenge
Sep 9, 2023
Farmville, VA
Freight Train 50K/100K
Dec 10, 2022
Cascade Locks, OR
Gorge Waterfalls
Apr 2, 2023
Apr 1, 2023
Corolla, NC
Blackbeard's Revenge 100
Mar 25, 2023
Seaside, OR
100K Relay on the Prom
May 27, 2022
Blue Diamond, NV
Red Rock Canyon 100K
Nov 11, 2023
Shenandoah, VA
Grindstone
Sep 22, 2023
Sep 23, 2023
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
Jul 29, 2023
Jul 30, 2023
Old Fort, NC
Leadmine Nine
Oct 1, 2022
Gold Beach, OR
Secret Beach 100K/50M
Aug 27, 2022
Jacksboro, TX
North Texas Ultra
Sep 23, 2023
Smithland, KY
Herzog 100
Apr 22, 2023
High Ridge, MO
The Shippey Endurance Runs
Jan 13, 2024
Jan 14, 2024
Mayer, AZ
Black Canyon Ultras
Feb 18, 2023
Waimea, HI
Under the Moon
Jun 3, 2023
Canal Fulton, OH
Eagle Up Ultra
Jun 3, 2023
Hookstown, PA
Rabid Raccoon 100
Mar 18, 2023
Mayfield, OH
Conquer the Castle
Nov 4, 2023
Sylvan Grove, KS
Hell Creek 100
Sep 29, 2023
Sep 30, 2023
Foresthill, CA
Canyons Endurance Runs
Apr 28, 2023
Apr 29, 2023
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
Sep 2, 2023
Butte Meadows, CA
Loco Go Big or Go Home Challenge
Jun 3, 2023
Naples, NY
Twisted Branch Trail Run
Aug 19, 2023
Sky Valley, GA
Sky to Summit Trail Run
Oct 28, 2023
Port Gamble, WA
Lumberjack Endurance Runs
Jun 17, 2023
Hurricane, WV
Hurricane 100K
Sep 9, 2023
Logandale, NV
Fire Fest Ultra
Nov 18, 2023
Nov 19, 2023
Forksville, PA
Worlds End Ultramarathon
Jun 3, 2023
Fort Pierce, FL
Saint Lucie Skeeter Skoot
Dec 10, 2022
Quitaque, TX
Wild Canyon Ultra
Apr 22, 2023
Blacksburg, SC
Mountaineer Rumble 50K, 100K and 100 Miler
Nov 4, 2023
Forest City, IL
Temptation 200 Ultras
Sep 2, 2023
Sep 3, 2023
Chesterfield, MA
Chesterfield Gorge Ultra and 25K Race
Jun 4, 2022
Jun 5, 2022
Apple Valley, UT
Zion Ultra Marathons
Apr 15, 2023
Apr 16, 2023
Vesuvius, VA
UROC 100K, Uber Rock 50K & Cruxy 25K
Apr 29, 2023
Silver Hill Meadow, VT
Vermont 100 Endurance Race
Jul 14, 2023
Hinckley, MN
Fire Tower Trail Races
Oct 7, 2023
Imler, PA
Lost Turkey Trail Races
Jul 29, 2023
Brazos Bend State Park, TX
Brazos Bend 50
Apr 1, 2023
Hyner Run State Park, PA
Black Forest Ultra 100K
Oct 1, 2023
Middlesex, NY
Great Hill Ultra
Jul 8, 2023
 |
 |
 |
 |
 |
 |
 |
 |
| Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
City Location
1. Highlands Trail Festival
-
Past DateMay 14, 2022Saturday
-
100K, 50M, 50K, 25K trail run
More Information
-
West Milford, NJ
Passaic County, NJ
2. 100K Relay on the Prom
-
Past DateMay 27, 2022Friday
-
100K relay
More Information
-
Seaside, OR
Clatsop County, OR
3. Chesterfield Gorge Ultra and 25K Race
-
Past DateJun 4, 2022Saturday
-
100M, 100K, 50M, 50K trail run
More Information
-
Chesterfield, MA
Hampshire County, MA
4. Hawaii Kai Ultra Run - XTreme
-
Past DateJul 23, 2022Saturday
-
100M, 100K, 50M, 50K, 26.2M, 30K, 13.1M run
More Information
-
Honolulu, HI
Honolulu County, HI
5. Kodiak Ultra Marathons
-
Past DateAug 19, 2022Friday
-
100M, 100K trail run
More Information
-
Big Bear Lake, CA
San Bernardino County, CA
6. Secret Beach 100K/50M
-
Past DateAug 27, 2022Saturday
-
100K, 50M, 50K trail run
More Information
-
Gold Beach, OR
Curry County, OR
7. Tava's Shadow Ultra
-
Past DateSep 17, 2022Saturday
-
100K, 50K, 25K trail run
More Information
-
Divide, CO
Teller County, CO
8. Knob Hills Trail Race
-
Past DateOct 1, 2022Saturday
-
100K, 50K, 25K, 10K trail run
More Information
-
Flower Mound, TX
Denton County, TX
9. Leadmine Nine
-
Past DateOct 1, 2022Saturday
-
100K trail run
More Information
-
Old Fort, NC
McDowell County, NC
10. Ice Age Trail Odyssey
-
Past DateOct 15, 2022Saturday
-
100K trail run | 100K relay
More Information
-
Cross Plains, WI
Dane County, WI
11. Ice Age Trail Odyssey
-
Past DateOct 16, 2022Sunday
-
100K trail run | 100K relay
More Information
-
Cross Plains, WI
Dane County, WI
12. Survival of the F.I.T.test 24 Hour Trail Ultra
-
Past DateOct 22, 2022Saturday
-
24H, 100M, 100K, 50K trail run | 24H relay
More Information
-
Cumberland, RI
Providence County, RI
13. Children of the Cane
-
Past DateOct 29, 2022Saturday
-
100M, 100K, 50M, 50K, 20M, 16.7M, 10M run
More Information
-
Port Allen, LA
West Baton Rouge County, LA
14. Run Amok
-
Past DateNov 5, 2022Saturday
-
100M, 100K, 50M, 50K, 26.2M, 13.1M, 10K, 5K run | kids run
More Information
-
Harrison, TN
Hamilton County, TN
15. Devil Dog Ultras
-
Past DateDec 3, 2022Saturday
-
100M, 100K trail run
More Information
-
Triangle, VA
Prince William County, VA
16. Freight Train 50K/100K
-
Past DateDec 10, 2022Saturday
-
100K, 50K trail run
More Information
-
Farmville, VA
Prince Edward County, VA
17. Saint Lucie Skeeter Skoot
-
Past DateDec 10, 2022Saturday
-
100K, 50K trail run | 100K, 50K relay
More Information
-
Fort Pierce, FL
St Lucie County, FL
18. Grit Ultra Endurance Challenge
-
Past DateDec 31, 2022Saturday
-
100M, 100K, 50M, 50K run | last man standing | 100M, 100K, 50M, 50K relay
More Information
-
West Columbia, TX
Brazoria County, TX
19. Croom Zoom
-
Past DateJan 7, 2023Saturday
-
100K, 50K, 25K trail run
More Information
-
Brooksville, FL
Hernando County, FL
20. Frozen: H3
-
Past DateJan 12, 2023Thursday
-
100M, 100K, 60K, 16.3M trail run | 100M relay
More Information
-
Bethera, SC
Berkeley County, SC
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.