| 14 May 2027 |
UTAH 115 (115 Miles) |
Kanab, Utah, United States |
| 14 May 2027 |
UTAH 50 (UTAH 50) |
Kanab, Utah, United States |
| 14 May 2027 |
Cruel Jewel 100 (100 Miler) |
Blairesville, Georgia, United States |
| 14 May 2027 |
Infinitus (100 Miler) |
Goshen, Vermont, United States |
| 15 May 2027 |
Quest for the Crest Trail Races (50K) |
Burnsville, North Carolina, United States |
| 15 May 2027 |
Keys 100 (100 Miles) |
Newport, Florida, United States |
| 15 May 2027 |
UTAH 50K (50kms) |
Kanab, Utah, United States |
| 15 May 2027 |
North Downs Way 50 (50 Miles) |
Waverley, England, United Kingdom |
| 15 May 2027 |
O'Neill Park Trail Races (50k|30k|Half Marathon|10k|Marathon) |
Trabuco Canyon, California, United States |
| 16 May 2027 |
Life Time Chicago Spring Half Marathon + 10K (Half Marathon) |
Chicago, Illinois, United States |
| 21-23 May 2027 |
Coyote Two Moon (55K|100 Miler|100K|30K) |
Ojai, California, United States |
| 29-30 May 2027 |
Stumptown Trail Runs (50K|1/2 Marathon) |
Portland, Oregon, United States |
| 29-30 May 2027 |
Calgary Marathon (Kids Race|Half Marathon|10K|5K|50K|Marathon) |
Calgary, Alberta, Canada |
| 29 May 2027 |
Smith Rock Classic (10 Mile|50K|50 Mile) |
Jefferson County, Oregon, United States |
| 30 May 2027 |
Saskatchewan Marathon (42.2k|5k|21.1.k|10k) |
Saskatoon, Saskatchewan, Canada |
| 04 Jun 2027 |
Hell Hole Hundred (100M) |
Charleston, South Carolina, United States |
| 4-5 Jun 2027 |
SAMO 100 Mile/100k (100 Miler|100K) |
Malibu, California, United States |
| 05 Jun 2027 |
Warhammer 100 (100 Miler) |
Slade, Kentucky, United States |
| 5-12 Jun 2027 |
Huron 100 (100 Miler|Waterloo-Pinckney 50) |
Grass Lake, Michigan, United States |
| 05 Jun 2027 |
River of No Return (53k) |
Challis City Park, Idaho, United States |
| 05 Jun 2027 |
Cape Mountain (50K|10K|25K) |
Florence, Oregon, United States |
| 05 Jun 2027 |
Malibu Canyon Trail Races (30K|50K|50 mile |Half Marathon|100K) |
Malibu, California, United States |
| 06 Jun 2027 |
Rock 'n' Roll San Diego (Half|Marathon) |
San Diego, California, United States |
| 12 Jun 2027 |
South Downs Way 100 (100 Miles) |
Winchester, England, United Kingdom |
| 12 Jun 2027 |
Mary's Peak Trail Run (50K|25K|50 Miler) |
Blodgett, Oregon, United States |
| 19 Jun 2027 |
West Highland Way (100 Miles) |
Milngavie, Scotland, United Kingdom |
| 19 Jun 2027 |
Sugar Daddy Race (Kids Fun Run|Half Marathon|10K|5K) |
Santa Clarita, California, United States |
| 19 Jun 2027 |
Tahoe 100K (100K) |
Douglas County, Nevada, United States |
| 21 Jun 2027 |
Tahoe 200 (200 Miler) |
Washoe County, Nevada, United States |
| 25 Jun 2027 |
Copper Kings 100 (100 Miler) |
Butte, Montana, United States |
| 25-26 Jun 2027 |
Black Hills 100 (100 Miler|50K|50 Miler) |
Sturgis, South Dakota, United States |
| 26 Jun 2027 |
Glacier Half Marathon (Half Marathon) |
Browning, Montana, United States |
| 26 Jun 2027 |
Truckee Tahoe Gravel (Long Course|Short Course|Medium Course) |
Truckee, California, United States |
| 26 Jun 2027 |
Minotaur SkyRace (32k) |
Crowsnest Pass, Alberta, Canada |
| 04 Jul 2027 |
Firecracker 5k & 10k (10k|5k) |
Bryson City, North Carolina, United States |
| 09 Jul 2027 |
Hardrock Endurance Run (100 Miler) |
Silverton, Colorado, United States |
| 10 Jul 2027 |
Siskiyou Out Back (100K|Brink 100|50K|15K) |
Jackson County, Oregon, United States |
| 10 Jul 2027 |
Honey Badger 100 (100 Mile) |
Cheney, Kansas, United States |
| 16-17 Jul 2027 |
Ouray 100 & 50 Mile Endurance Run (100 Miler|50 Miler) |
Ouray, Colorado, United States |
| 17 Jul 2027 |
Elder Creek Night Run (30 K|9 Miler|13 Miler|50 K) |
Anza, California, United States |
| 21 Jul 2027 |
Badwater 135 (135 Miler) |
Death Valley, California, United States |
| 24 Jul 2027 |
Harding Hustle (30K|50K) |
Modjeska, California, United States |
| 24 Jul 2027 |
Standhope (60K) |
Ketchum, Idaho, United States |
| 24 Jul 2027 |
Pikes Peak Ultra (50k|30k|50 Miler) |
Colorado Springs, Colorado, United States |
| 24 Jul 2027 |
Snowdon Ultra (100 Miles|50 Miles) |
Betws Y Coed, Wales, United Kingdom |
| 24-25 Jul 2027 |
Wy'east Trailfest (14K|8K|50 Miler|50K|28K|Half Marathon) |
Mt. Hood, Oregon, United States |
| 24 Jul 2027 |
Mighty Mosquito (Mini Mosquito 50k/ Team Relay|100 Miler) |
Mendon, New York, United States |
| 24 Jul 2027 |
Elk Valley Ultra (50K) |
Fernie, British Columbia, Canada |
| 31 Jul 2027 |
Juneau Marathon (Marathon) |
Juneau, Alaska, United States |
| 31 Jul 2027 |
Badger 100 (100 Miler) |
Belleville, Wisconsin, United States |
| 7-8 Aug 2027 |
Volcanic (25K|50K) |
Cougar, Washington, United States |
| 07 Aug 2027 |
North Downs Way 100 (100 Miles) |
Waverley, England, United Kingdom |
| 07 Aug 2027 |
Ultra Great Britain (215 Miles) |
Portpatrick, Scotland, United Kingdom |
| 13 Aug 2027 |
Bigfoot 200 (200 Miler) |
Mount Saint Helens, Washington, United States |
| 14 Aug 2027 |
Eastern States 100 (Eastern States 100 ) |
Waterville, Pennsylvania, United States |
| 14 Aug 2027 |
Post Canyon 50K (50K) |
Hood River, Oregon, United States |
| 14-15 Aug 2027 |
Squamish 50 (23 km|50 mile|50 km) |
Squamish, British Columbia, Canada |
| 21 Aug 2027 |
Shawnee Hills 100 (100K|100 Miler|50K) |
Ozark, Illinois, United States |
| 21 Aug 2027 |
Moose Mountain Trail Races (42K|29K) |
Bragg Creek, Alberta, Canada |