100Ks in the USA
Santa Barbara, CA
Santa Barbara Endurance Run
Oct 12, 2019
Nashville, IN
Dances With Dirt - Gnaw Bone, IN
May 18, 2019
Mt. Hood, OR
Wy'east Howl Trail Run
Jul 27, 2019
Dallas, TX
Big Cedar Endurance Run - 100M
Dec 1, 2018
Florahome, FL
Iron Horse Endurance Runs
Feb 9, 2019
Fountain Hills, AZ
Javelina Jundred
Oct 26, 2019
Bainbridge Island, WA
Bainbridge Island 100M/100K Relay
Aug 17, 2019
Deerfield Beach, FL
PALM100 Ultras
Oct 26, 2019
Fayetteville, NY
Green Lakes Endurance Runs
Aug 10, 2019
West Windsor, VT
Vermont 100 Endurance Run
Jul 20, 2019
Tyler, TX
Piney Woods Ultra
Sep 21, 2019
Honolulu, HI
Hawaii Kai Ultra Run - Kalama Valley
Dec 15, 2018
Duluth, MN
Wild Duluth Races
Oct 19, 2019
Rockaway, NJ
Wildcat Ridge Romp Trail Races
Aug 10, 2019
Alcoa, TN
Pistol Ultra Run
Mar 16, 2019
Hinckley, OH
Buzzard Day Race
Mar 16, 2019
Silverton, CO
Silverton Ultra Marathon
Aug 3, 2019
San Jose, CA
Quicksilver Endurance Runs
May 11, 2019
Jackson, MS
Big Butts
Jul 20, 2019
Cerritos, CA
Orange Curtain 100K
Feb 16, 2019
Spartanburg, SC
One Epic Run
Dec 7, 2019
Southern Pines, NC
Weymouth Woods 100K Trail Run
Jan 19, 2019
Bandera, TX
Bandera Endurance Run
Jan 5, 2019
Rocky Point, NY
Tesla Hertz Run
Oct 12, 2019
Stinson Beach, CA
Miwok 100K
May 4, 2019
Lawrence, KS
Free State Trail Run
Apr 27, 2019
Stillwater, OK
Lake McMurtry Run
Apr 11, 2020
Henderson, NV
Trail Trashed
Mar 7, 2020
Springville, UT
Kat'cina Mosa 100K Mountain Run
Aug 3, 2019
Charlottesville, VA
UROC 100K, Uber Rock 50K & Cruxy 25K
May 11, 2019
Las Cruces, NM
Hot Chili Pepper Ultras
Mar 15, 2019
Fiesta Grande Ultras
Apr 27, 2019
Zombie Ultras
Nov 2, 2019
Homer, AK
Homer Epic
Mar 16, 2019
Ashland, OR
Siskiyou Out Back Trail Run
Jul 13, 2019
Pullman, WA
Palouse 100K
Apr 7, 2019
Willoughby Hills, OH
Conquer the Castle
Sep 28, 2019
Madison, WI
MadCity 100K
Apr 13, 2019
Hot Springs, AR
Run LOViT 100K
Feb 29, 2020
Brooksville, FL
Croom Zoom
Jan 5, 2019
El Paso, TX
Lone Star 100
Feb 8, 2020
Phoenicia, NY
Catskill Mountain 100K
Aug 11, 2019
Plain, WA
Plain Endurance Runs
Sep 14, 2019
San Francisco, CA
Ruth Anderson Memorial Endurance Run
Oct 12, 2019
San Angelo, TX
Crazy Desert Trail Run
Mar 9, 2019
Oakridge, OR
Where's Waldo 100K Ultramarathon
Aug 17, 2019
New Preston, CT
Jack Bristol Lake Waramaug Ultra Races
Apr 28, 2019
La Grange, WI
Kettle Moraine 100 Endurance Runs
Jun 1, 2019
Truckee, CA
Castle Peak 100K
Aug 24, 2019
Salinas, CA
Ordnance 100K
Feb 2, 2019
Albion, IN
Indiana Trail 100
Oct 12, 2019
San Antonio, TX
El Taco Loco
Oct 26, 2019
Jim Thorpe, PA
Boulder Field 100
Sep 14, 2019
Chelan, WA
Echo Valley Trail Run
Jun 15, 2019
San Diego, CA
Sycamore Canyon Trail Race
Feb 23, 2019
Pensacola, FL
Wildcat Ultras
Aug 31, 2019
Hell, MI
Dances With Dirt - Hell
Sep 21, 2019
Millburn, NJ
Mayapple Trail Run
May 11, 2019
Fincastle, VA
Hellgate 100K
Dec 8, 2018
Castro Valley, CA
Bay Ridge 100K
Oct 5, 2019
Trabuco Canyon, CA
Baldy Marathons
May 18, 2019
Titusville, PA
Oil Creek 100 Trail Runs
Oct 12, 2019
Tahlequah, OK
Pumpkin Holler Hunnerd
Oct 19, 2019
Davidson, NC
DART 100K Challenge
Feb 23, 2019
Sturgis, SD
Black Hills 100
Jun 28, 2019
Lakewood, CO
Bear Chase Race - 100K/50M/50K
Sep 28, 2019
Surfside Beach, TX
Orion Ultra
Oct 13, 2018
Beaver, UT
Tushars Mountain Runs
Jul 27, 2019
Rocksprings, TX
J & J Race and Trail Running Reunion
Sep 27, 2019
Harrison, TN
Run Amok
Nov 3, 2018
Port Allen, LA
Children of the Cane
Oct 6, 2018
Burns, TN
Mo' Bell
Aug 3, 2019
Wesley Chapel, FL
Long Haul 100
Jan 19, 2019
Wellsboro, PA
Pine Creek Challenge
Sep 7, 2019
Cascade Locks, OR
Gorge Waterfalls 100K
Apr 7, 2018
Virgin, UT
Zion Ultra Marathons
Apr 12, 2019
Corolla, NC
Blackbeard's Revenge 100
Mar 28, 2020
Belleville, WI
Badger Trail Races - Badger 100
Aug 3, 2019
Beach City, OH
Whistling Pines 112
Oct 27, 2018
Roseburg, OR
NUT 100K & 50K
Sep 7, 2019
Prineville, OR
Ochoco Trail Runs
Jul 6, 2019
Gold Beach, OR
Secret Beach 100K/50M
Oct 5, 2019
Walden, CO
Never Summer 100K Trail Race
Jul 27, 2019
High Ridge, MO
Shippey Endurance Runs
Aug 2, 2019
Westcliffe, CO
Sangre de Cristo Ultras
Sep 21, 2019
Mayer, AZ
Black Canyon Ultras
Feb 15, 2020
Challis, ID
River of No Return Endurance Runs
Jun 15, 2019
Canal Fulton, OH
Eagle Up Ultra
Jun 8, 2019
Bethera, SC
Hell Hole Hundred
Jun 1, 2019
Frozen: H3
Jan 18, 2020
Elkhorn City, KY
Cloudsplitter 100
Oct 12, 2019
Lolo, MT
Hootenanny 100K
Oct 6, 2019
Carthage, MO
36 Hours Of Jack
Dec 7, 2019
Cat Spring, TX
Habanero Hundred
Aug 17, 2019
Booneville, IA
Booneville Backroads Ultra
May 25, 2019
Pinson, TN
Dream Chaser
Oct 5, 2019
Naples, NY
Twisted Branch Trail Run
Aug 17, 2019
Port Gamble, WA
Lumberjack Endurance Runs
Jun 8, 2019
Hardwick, NJ
NJ Ultra Festival
Apr 6, 2019
Forksville, PA
Worlds End Ultramarathon
Jun 1, 2019
Bend, TX
Tinajas Ultra
Mar 2, 2019
Quitaque, TX
Wild Canyon Ultra
Apr 13, 2019
Hyden, KY
Redbird Crest 100K
Dec 1, 2018
Forest City, IL
Temptation 200 Ultras
Sep 7, 2019
Chesterfield, MA
Chesterfield Gorge Ultra and 25k Race
Jun 1, 2019
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| Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
City Location
1. Bandera Endurance Run
-
Past DateJan 5, 2019Saturday
-
100K, 50K, 25K trail run
Race Link
-
Bandera, TX
Bandera County, TX
2. Croom Zoom
-
Past DateJan 5, 2019Saturday
-
100K, 50K, 25K trail run
Race Link
-
Brooksville, FL
Hernando County, FL
3. Frozen: H3
-
Jan 18, 2020Saturday
-
100M, 100K, 60K, 16.3M trail run | 100M relay
Race Link
-
Bethera, SC
Berkeley County, SC
4. Long Haul 100
-
Past DateJan 19, 2019Saturday
-
100M, 100K run
Race Link
-
Wesley Chapel, FL
Pasco County, FL
5. Weymouth Woods 100K Trail Run
-
Past DateJan 19, 2019Saturday
-
100K trail run
Race Link Problem
-
Southern Pines, NC
Moore County, NC
6. Ordnance 100K
-
Past DateFeb 2, 2019Saturday
-
100K trail run
Race Link
-
Salinas, CA
Monterey County, CA
7. Lone Star 100
-
Feb 8, 2020Saturday
-
100M, 100K trail run | 100K relay
Race Link
-
El Paso, TX
El Paso County, TX
8. Iron Horse Endurance Runs
-
Past DateFeb 9, 2019Saturday
-
100M, 100K, 50M trail run
Race Link
-
Florahome, FL
Putnam County, FL
9. Black Canyon Ultras
-
Feb 15, 2020Saturday
-
100K, 60K trail run
Race Link
-
Mayer, AZ
Yavapai County, AZ
10. Orange Curtain 100K
-
Past DateFeb 16, 2019Saturday
-
100K, 50K, 30K, 10K run
Race Link
-
Cerritos, CA
Los Angeles County, CA
11. DART 100K Challenge
-
Past DateFeb 23, 2019Saturday
-
100K run
Race Link
-
Davidson, NC
Mecklenburg County, NC
12. Sycamore Canyon Trail Race
-
Past DateFeb 23, 2019Saturday
-
100K, 50K, 13.1M trail run | 100K relay
Race Link
-
San Diego, CA
San Diego County, CA
13. Red Dirt Ultra
-
Feb 29, 2020Saturday
-
100M, 100K, 50K trail run
Race Link
- Provencal, LA
14. Run LOViT 100K
-
Feb 29, 2020Saturday
-
100K run
Race Link
-
Hot Springs, AR
Garland County, AR
15. Tinajas Ultra
-
Past DateMar 2, 2019Saturday
-
13.1M run | 100K, 50K trail run | 100K, 50K relay
Race Link
-
Bend, TX
San Saba County, TX
16. Trail Trashed
-
Mar 7, 2020Saturday
-
100K, 50K, 26.2M, 13.1M, 10K, 5K, 1M trail run
Race Link
-
Henderson, NV
Clark County, NV
17. Crazy Desert Trail Run
-
Past DateMar 9, 2019Saturday
-
100K, 50K, 13.1M, 10K, 5K trail run
Race Link
-
San Angelo, TX
Tom Green County, TX
18. Hot Chili Pepper Ultras
-
Past DateMar 15, 2019Friday
-
24H, 100M, 100K, 50M run
Race Link
-
Las Cruces, NM
Dona Ana County, NM
19. Buzzard Day Race
-
Past DateMar 16, 2019Saturday
-
100K, 50K, 25K trail run
Race Link
-
Hinckley, OH
Medina County, OH
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.