| 30 Sep 2023 |
Crested Butte Ultra (105K|55K) |
Crested Butte, Colorado, United States |
| 30 Sep 2023 |
Iron Horse Ultra 100 (100 Miles) |
Town Of St. Paul, Alberta, Canada |
| 30 Sep 2023 |
Mt. Taylor 50K (50K) |
Grants, New Mexico, United States |
| 30 Sep 2023 |
Runtheberg (Runtheberg Extreme Day Two|Runtheberg Challenge Day One|Runtheberg Challenge Day Two|Runtheberg Lite Day Two|Runtheberg Lite Day One|Runtheberg Extreme Day One) |
Bergville, GT, South Africa |
| 30 Sep 2023 |
Oregon Coast 50k (50K|20 Miler) |
Yachats, Oregon, United States |
| 30 Sep 2023 |
Tulsa Urban Adventure (100 Miles) |
Tulsa, Oklahoma, United States |
| 30 Sep 2023 |
Saddle2Surf (100 Miler) |
Norco, California, United States |
| 30 Sep 2023 |
Range of Light Trail Races (50K|33K|10K|5K) |
Bishop, California, United States |
| 30 Sep 2023 |
Gran Pretzelismo Triathlon (1.5km Swim|10km Run|40km Bike) |
Chicago, Illinois, United States |
| 01 Oct 2023 |
Field Station Frenzy 5K Trail Run & Walk (5K|2K) |
Porter, Indiana, United States |
| 01 Oct 2023 |
Twin Cities Marathon (Marathon) |
Minneapolis, Minnesota, United States |
| 01 Oct 2023 |
Black Forest Ultra (100 km) |
North Bend, Pennsylvania, United States |
| 07 Oct 2023 |
Cuyamaca 100K (100K) |
Julian, California, United States |
| 07 Oct 2023 |
Canal Corridor 100 (100 Miler) |
Akron, Ohio, United States |
| 07 Oct 2023 |
Harrisonburg Half Marathon (Half Marathon) |
Harrisonburg, Virginia, United States |
| 07 Oct 2023 |
Baker Lake 50K (50K) |
Baker Lake, Washington, United States |
| 07 Oct 2023 |
Djurgårdsvarvet (10 k) |
Stockholm, Stockholm, Sweden |
| 7-8 Oct 2023 |
Midstate Massive Ultra Trail (30 Miler|100 Miler|50 Miler) |
New Ipswich, New Hampshire, United States |
| 7-8 Oct 2023 |
Midstate Massive Ultra Trail (30 Miler|50 Miler|100 Miler) |
Charlton, Massachusetts, United States |
| 07 Oct 2023 |
Rock/Creek Stump Jump (50K) |
Chattanooga, Tennessee, United States |
| 07 Oct 2023 |
Flagstaff Sky Peaks Mountain Runs (26K|50K|50 Miler|10 K) |
Coconino County, Arizona, United States |
| 07 Oct 2023 |
Tesla Hertz Run (100 Miler) |
Suffolk County, New York, United States |
| 07 Oct 2023 |
Hennepin Hundred (100 Miler) |
Whiteside County, Illinois, United States |
| 07 Oct 2023 |
Shawnee Trail Runs (50 Mile|13.1 Mile|50K) |
West Portsmouth, Ohio, United States |
| 08 Oct 2023 |
Steamtown Marathon (26.2 Miles) |
Forest City, Pennsylvania, United States |
| 08 Oct 2023 |
Chicago Marathon (Marathon) |
Chicago, Illinois, United States |
| 13-15 Oct 2023 |
Kodiak (21K|10K|100K|50K|100 Miler) |
Big Bear Lake, California, United States |
| 13 Oct 2023 |
Moab 240 Endurance Run (240) |
Moab, Utah, United States |
| 14 Oct 2023 |
Arkansas Marathon (Arkansas Marathon) |
Booneville, Arkansas, United States |
| 14 Oct 2023 |
Cave Creek Thriller (50K|11K|24K|5K) |
Cave Creek, Arizona, United States |
| 14 Oct 2023 |
No Name 5030 (50K) |
Agoura, California, United States |
| 14 Oct 2023 |
Cloudsplitter 100 (100 Miler) |
Norton, Virginia, United States |
| 14 Oct 2023 |
Whiskey Row Marathon (Marathon|5K|10K|Half-Marathon) |
Prescott, Arizona, United States |
| 14 Oct 2023 |
Autumn 100 (100 Miles) |
Streatley, England, United Kingdom |
| 14 Oct 2023 |
Elk-Kings 25k/50k (25K|50K) |
Tillamook, Oregon, United States |
| 15 Oct 2023 |
Toronto Waterfront Marathon (Marathon|5K|Half Marathon) |
Old Toronto, Ontario, Canada |
| 15 Oct 2023 |
Jet Blue Long Beach Marathon (Marathon) |
Long Beach, California, United States |
| 20 Oct 2023 |
Mines of Spain 100 (100 Miler|100K) |
Dubuque, Iowa, United States |
| 20 Oct 2023 |
Pony Express Trail Run (50 Miler|100 Miler) |
West Of Faust, Utah, United States |
| 20 Oct 2023 |
No Business 100 (100 Miler) |
Stearns, Kentucky, United States |
| 21 Oct 2023 |
Lake Sonoma 100K and 55k (55K|100K) |
Sonoma County, California, United States |
| 21 Oct 2023 |
Uwharrie 100 (100 Miler) |
Lake In The Pine, North Carolina, United States |
| 21 Oct 2023 |
SPACEROCK Trail Race (15K|5K|10K|Half Marathon) |
Agua Dulce, California, United States |
| 21 Oct 2023 |
Savage 100 (100 Miles|100k) |
Savage, Minnesota, United States |
| 21 Oct 2023 |
Pumpkin Holler Hunnerd (100K) |
Ellerville, Oklahoma, United States |
| 22 Oct 2023 |
Leatherman's Loop (10k) |
Ward Pound Ridge Reservation, New York, United States |
| 22 Oct 2023 |
Tussey Mountainback (50 Miler) |
Harris Township, Pennsylvania, United States |
| 28 Oct 2023 |
Javelina Jundred (100K|100 Miler) |
Fountain Hills, Arizona, United States |
| 28 Oct 2023 |
Oakland Hills Trail Run (35K|1/2 Marathon) |
Oakland, California, United States |
| 28 Oct 2023 |
Kansas Rails to Trails (100 Miler) |
Ottawa, Kansas, United States |
| 28 Oct 2023 |
RFYL (5k) |
Bozeman, Montana, United States |
| 28 Oct 2023 |
SAMO Trail Runs 50 mile/50k/30k (30K|50K|50 Mile ) |
Los Angeles, California, United States |
| 28 Oct 2023 |
Ozark Trail 100 (100 Miles) |
Reynolds, Missouri, United States |
| 28 Oct 2023 |
Indianapolis Monumental Marathon (Marathon) |
Indianapolis, Indiana, United States |
| 29 Oct 2023 |
Viking 5K (5K) |
Allentown, Pennsylvania, United States |
| 04 Nov 2023 |
Charlotte Marathon (Marathon|Half Marathon) |
Charlotte, North Carolina, United States |
| 04 Nov 2023 |
Rio Del Lago (100M) |
Folsom, California, United States |
| 04 Nov 2023 |
Screaming Monkey 100 (100 Miler) |
Preston, Louisiana, United States |
| 04 Nov 2023 |
Pinhoti Trail Runs (Pinhoti 100) |
Cleburne, Alabama, United States |
| 04 Nov 2023 |
Joshua Tree Half Marathon (Half Marathon) |
Joshua Tree National Park, California, United States |
| 04 Nov 2023 |
Rio Del Lago (100 Miler) |
Folsom, California, United States |
| 05 Nov 2023 |
New York Marathon (Marathon) |
New York, New York, United States |
| 05 Nov 2023 |
Santa Barbara Half (5K|Half Marathon) |
Santa Barbara, California, United States |
| 07 Nov 2023 |
Route 66 Ultrarun (Route 66 Ultrarun) |
Seligman, Arizona, United States |
| 10 Nov 2023 |
tBunk (100 Miler) |
La Grange, Wisconsin, United States |
| 11 Nov 2023 |
Run The Rock (1/2 Marathon|20 Miler|50K|50 Miler) |
Terrebonne, Oregon, United States |
| 11 Nov 2023 |
Butch Cassidy 10k/5k (5k|10k) |
Springdale, Utah, United States |
| 11 Nov 2023 |
Mt. Tam Trail Run (10K|1/2 Marathon|50K|30K) |
Stinson Beach, California, United States |
| 11 Nov 2023 |
Winter Wychavon Way (40 Miles) |
Wychavon, England, United Kingdom |
| 11 Nov 2023 |
Caspers Trail Runs (13.2 Miler|35K|10K|Marathon|50k) |
San Juan Capistrano, California, United States |
| 11 Nov 2023 |
Tunnel Hill (100 Miler) |
Vienna, Illinois, United States |
| 11 Nov 2023 |
Children of the Cane 100 (100 Miler) |
Sunrise, Louisiana, United States |
| 11 Nov 2023 |
Beacons Ultra (Marathon|46 Miles) |
Talybont On Usk, Wales, United Kingdom |
| 11 Nov 2023 |
Chino Hills Run Series Fall (50K) |
Brea, California, United States |
| 11 Nov 2023 |
Rebellion Winter (75 Miles|135 Miles) |
Knighton, Wales, United Kingdom |
| 11-12 Nov 2023 |
The Skippo (Course Monitors and Aid Station Locations|Half Marathon|10k) |
Ballwin, Missouri, United States |
| 11 Nov 2023 |
Catalina Half Marathon & 10K (Half Marathon|10k) |
Avalon, California, United States |
| 11 Nov 2023 |
Exodus 100 Mile Ultramarathon (100 Miles) |
Felindre, Wales, United Kingdom |
| 12 Nov 2023 |
Parkway Subaru Battleship NC Half Marathon (Half Marathon|10K|5K) |
Wilmington, North Carolina, United States |
| 18 Nov 2023 |
Dead Horse Ultra (50K|30K|50 Miler) |
Moab, Utah, United States |
| 18 Nov 2023 |
Dinosaur Valley Endurance Run (100 Miler) |
Somervell County, Texas, United States |
| 24-26 Nov 2023 |
Ultra Trail Cape Town (UTCT|PT55|TM35|EX23|UT100) |
Cape Town, Western Cape, South Africa |
| 25 Nov 2023 |
Quad Dipsea (28.4 Miler) |
Mill Valley, California, United States |
| 25 Nov 2023 |
SISU 24 (Monrovia Peak Towers (orange polka dot)|Mt. Bliss (red checkered)|Clamshell Peak (pink polka dot)|Deer Park Lodge (green)) |
Monrovia, California, United States |
| 01 Dec 2023 |
Blood Rock (100 Miler) |
Pelham, Alabama, United States |
| 02 Dec 2023 |
Wild in the Woods (Course Monitors and Aid Station Locations|5 Mile) |
Defiance, Missouri, United States |
| 02 Dec 2023 |
Devil Dog Ultras (100-Mile) |
Belfair Crossroads, Virginia, United States |
| 02 Dec 2023 |
McDowell Mountain Frenzy (50 Miler|50K) |
Fountain Hills, Arizona, United States |
| 02 Dec 2023 |
Ray Miller 50/50 (30K|50 Miler|50K) |
Malibu, California, United States |
| 02 Dec 2023 |
San Joaquin River Trail Runs (100K|50K) |
Friant, California, United States |
| 02 Dec 2023 |
Anza Borrego Cuyamaca 50 (ABC 50) (50 Miler) |
Harrison Park, California, United States |
| 02 Dec 2023 |
Santa Monica Venice Christmas Run (5k|10k) |
Santa Monica, California, United States |
| 03 Dec 2023 |
California International Marathon (CIM) (Marathon) |
Sacramento, California, United States |
| 09 Dec 2023 |
Hitchcock Experience (100 Miler) |
Honey Creek, Iowa, United States |
| 09 Dec 2023 |
Daytona 100 (100 Miler) |
Duval County, Florida, United States |
| 9-10 Dec 2023 |
Rocket City Marathon Race Weekend (5K|10K|Marathon|Front Half-Marathon|Back Half-Marathon) |
Huntsville, Alabama, United States |
| 09 Dec 2023 |
Over the Hill Track Club High Desert (30K|50K) |
Ridgecrest, California, United States |
| 10 Dec 2023 |
Santa to the Sea (Half Marathon) |
Oxnard, California, United States |
| 10 Dec 2023 |
Holiday Classic 10.8k (10.8k) |
Halton Hills, Ontario, Canada |
| 10 Dec 2023 |
Tucson Marathon (Marathon) |
Tucson, Arizona, United States |