| 09 Apr 2026 |
Klipspringer Challenge (Lite Day 1|Lite Day 2|Challenge Day 1|Challenge Day 2) |
Augrabies, Northern Cape, South Africa |
| 09 Apr 2026 |
Northern Traverse (190 Miles) |
Copeland, England, United Kingdom |
| 09 Apr 2026 |
Potowatomi (50 Miler) |
Pekin, Illinois, United States |
| 10 Apr 2026 |
Zumbro Endurance Run (100 Miler) |
Theilman, Minnesota, United States |
| 10 Apr 2026 |
Gorge Waterfalls (50K|100K) |
Cascade Locks, Oregon, United States |
| 11 Apr - 17 Oct 2026 |
Lake Sonoma 100K and 55k (55K|100K) |
Sonoma County, California, United States |
| 11 Apr 2026 |
Martian Invasion of Races (5K|13.1M|10K|26.2M) |
Dearborn, Michigan, United States |
| 11 Apr 2026 |
Oriflamme 50k (50km) |
Julian, California, United States |
| 11-12 Apr 2026 |
Hogeye Marathon (5K|Half Marathon|Marathon|10K) |
Springdale, Arkansas, United States |
| 11 Apr 2026 |
Run Sunset Beach (5K|Half Marathon) |
Sunset Beach, North Carolina, United States |
| 11 Apr 2026 |
Ultra-Trail Austrailia (50k|100k) |
Katoomba, New South Wales, Australia |
| 11 Apr 2026 |
Dirty Kiln Trail Races - REVERSE (Short Course - 10K|Long Course - (Second Loop aka The Back Half)) |
Hollidaysburg, Pennsylvania, United States |
| 11 Apr 2026 |
Two Oceans Marathon (56K|Half Marathon) |
Cape Town, Western Cape, South Africa |
| 11 Apr 2026 |
Mad City Ultras (50k|100k) |
Madison, Wisconsin, United States |
| 11 Apr 2026 |
South Downs Way 50 (50 Miles) |
Worthing, England, United Kingdom |
| 12 Apr 2026 |
Peterson Ridge Rumble (40 Miler|20 Miler) |
Sisters, Oregon, United States |
| 14 Apr 2026 |
King Offa's Dyke Race (185 Miles) |
Forest Of Dean, England, United Kingdom |
| 14 Apr 2026 |
Mountains 2 Beach (Marathon|Half-Marathon) |
Ojai, California, United States |
| 17 Apr 2026 |
Double Top 100 Stone Anvil (100 Miler) |
Hasslers Mill, Georgia, United States |
| 18 Apr 2026 |
Woodside/Purisima Creek Crossover (35K|50K) |
Redwood City, California, United States |
| 18 Apr 2026 |
Rattler Trail Races (25K|10K) |
Colorado Springs, Colorado, United States |
| 18 Apr 2026 |
END-SURE (100 Miler) |
Power, North Dakota, United States |
| 18 Apr 2026 |
Whiskey Basin Trail Runs (91K|1/2 Marathon|10K|60k|33k) |
Prescott, Arizona, United States |
| 18 Apr 2026 |
Chester Ultra 100 (100 Miles) |
Waverton, England, United Kingdom |
| 18 Apr 2026 |
Zane Grey (100K) |
Pine, Arizona, United States |
| 18 Apr 2026 |
Dunes 100 (100 Miler) |
Hell Gate, Florida, United States |
| 18 Apr 2026 |
Hyner Trail Challenge (25K|50K) |
Hyner, Pennsylvania, United States |
| 18 Apr 2026 |
Kai Iwi Lakes Trail Run 2026 (14km|8km|14km Trail Run) |
Kaipara District, Northland, New Zealand |
| 18 Apr 2026 |
Leona Divide (50 Miler|100 Miler|100K|50K|30K) |
Lake Hughes, California, United States |
| 19 Apr 2026 |
Athens Ohio Marathon and Half Marathon (Marathon|Half Marathon) |
Athens, Ohio, United States |
| 19 Apr 2026 |
Devon Coast to Coast (117 Miles) |
South Hams, England, United Kingdom |
| 20 Apr 2026 |
Boston Marathon (Marathon) |
Boston, Massachusetts, United States |
| 24-25 Apr 2026 |
The Canyons Endurance Runs (100M|100K|25K|50K) |
Foresthill, California, United States |
| 25 Apr 2026 |
SoCal Redwood Race 3/6/12 Hours (2 mile loop) |
Brea, California, United States |
| 25 Apr 2026 |
Sinister Night Runs (27K|6K|18K|9K|54K) |
Pinal County, Arizona, United States |
| 25 Apr 2026 |
Trail Weekend (50K|13.1M|5M|26.2M) |
Gregory, Michigan, United States |
| 25 Apr 2026 |
Royal Gorge Groove (20K|50K|5K|12.5K|30K) |
Buckskin Joe, Colorado, United States |
| 25 Apr 2026 |
Kirkwood Beer Run (5k) |
Kirkwood, Missouri, United States |
| 25 Apr 2026 |
C&O Canal 100 (100 Miles) |
Water Acres, Maryland, United States |
| 26 Apr - 06 Jun 2026 |
PCT 50 (50 Miler|Training Run #1|Training Run #2) |
Cleveland National Forest, California, United States |
| 26 Apr 2026 |
Eugene Marathon (Marathon|Half) |
Eugene, Oregon, United States |
| 26 Apr 2026 |
Big Sur International Marathon (Marathon) |
Big Sur, California, United States |
| 1-3 May 2026 |
Coyote Two Moon (55K|100 Miler|100K|30K) |
Ojai, California, United States |
| 01 May 2026 |
San Diego 100 (100 Miler) |
Lake Cuyamaca, California, United States |
| 01 May 2026 |
Salt Flats Endurance Runs (100 Miler|50 Miler) |
Wendover, Utah, United States |
| 02 May 2026 |
Thames Path 100 (100 Miles) |
London, England, United Kingdom |
| 02 May 2026 |
Miwok 100k (100k) |
Stinson Beach, California, United States |
| 02 May 2026 |
Collegiate Peaks Trail Run (25 Miler|50 Miler) |
Buena Vista, Colorado, United States |
| 02 May 2026 |
McDonald Forest 50k (50K) |
Benton County, Oregon, United States |
| 02 May 2026 |
Riverlands 100 (100 Miler) |
Auburn Plains, Maine, United States |
| 03 May 2026 |
Sisters Country (Half Marathon|50K) |
Sisters, Oregon, United States |
| 03 May 2026 |
Breakneck Point Trail Runs (21K|42K) |
Beacon, New York, United States |
| 03 May 2026 |
Flying Pig Marathon (Marathon|Half|10K) |
Cincinnati, Ohio, United States |
| 03 May 2026 |
BMO Vancouver Marathon (Half Marathon|Marathon) |
Vancouver, British Columbia, Canada |
| 03 May 2026 |
Verdugo Mountains 10k (10k) |
Glendale, California, United States |
| 4-8 May 2026 |
Cocodona (Sedona Canyons 125|Elden Crest 36|Cocodona 250) |
Rock Springs, Arizona, United States |
| 08 May 2026 |
Tillamook Burn Trail Run (50K) |
Tillamook State Forest, Oregon, United States |
| 08 May 2026 |
Hellbender 100 (100-Miler) |
Old Fort, North Carolina, United States |
| 08 May 2026 |
Hightail to Ale (5K) |
Detroit, Michigan, United States |
| 09 May 2026 |
Jemez Mountain (50K|15 Miler|50 Miler) |
Los Alamos, New Mexico, United States |
| 09 May 2026 |
I Ran The D 5K (5K Run & Walk) |
Detroit, Pennsylvania, United States |
| 09 May 2026 |
Survival of the Fittest 35k (35k) |
Squamish, British Columbia, Canada |
| 09 May 2026 |
Thunderbunny Trail Races (25K|11K|50K) |
Athens, Ohio, United States |
| 09 May 2026 |
Singletrack Stampede (10k Trail|22k Trail) |
Calabasas, California, United States |
| 09 May 2026 |
Survival of the Fittest 18k (18k) |
Squamish, British Columbia, Canada |
| 09 May 2026 |
Quicksilver (100K|50K) |
San Jose, California, United States |
| 09 May 2026 |
Ice Age Trail Endurance Runs (50k|Half Marathon|50 Miler) |
La Grange, Wisconsin, United States |
| 09 May 2026 |
Yosemite Half Marathon (Half Marathon) |
Yosemite National Park, California, United States |
| 10 May 2026 |
TMNZ Run the Bay (8.7km|Half Marathon|Full Marathon|6km) |
Paihia, Northland, New Zealand |
| 15 May 2026 |
Born to Run (100M) |
Santa Ynez, California, United States |
| 15 May 2026 |
UTAH 115 (115 Miles) |
Kanab, Utah, United States |
| 15 May 2026 |
UTAH 50 (UTAH 50) |
Kanab, Utah, United States |
| 15 May 2026 |
TRIBW26 - achtste (4 TRIBW- Fietsen - hardlopen|2 TRIBW25 zwemmen - fietsen|1 TRIBW25 zwemmen achtste|3 TRIBW25 fietsen achtste|5 TRIBW25 lopen achtste) |
Bergen Op Zoom, North Brabant, Netherlands |
| 15-29 May 2026 |
TRBW26 - half (2 - Zwemmen - fietsen|4 - Fietsen - hardlopen|1- Halve (midden) afstand - zwemmen|3 Halve (midden) afstand fietsen|5 - Halve (midden) afstand - lopen) |
Bergen Op Zoom, North Brabant, Netherlands |
| 15 May 2026 |
Infinitus (100 Miler) |
Goshen, Vermont, United States |
| 15 May 2026 |
Cruel Jewel 100 (100 Miler) |
Blairesville, Georgia, United States |
| 15 May 2026 |
TRIBW26 - kwart (1 Zwemmen - kwart|3 Fietsen - hardlopen|2 Zwemmen - fietsen|3 Fietsen- kwart|4 Hardlopen - kwart) |
Bergen Op Zoom, North Brabant, Netherlands |
| 16 May 2026 |
O'Neill Park Trail Races (50k|30k|Half Marathon|10k|Marathon) |
Trabuco Canyon, California, United States |
| 16 May 2026 |
Sun Mountain (50K) |
Winthrop, Washington, United States |
| 16 May 2026 |
Zegama-Aizkorri (Marathon) |
Zegama, Basque Country, Spain |
| 16 May 2026 |
Bishop High Sierra Ultras (50 Miler|55K|100K) |
Bishop, California, United States |
| 16 May 2026 |
Ram Party (24K |50 Mile|50K|16K|33K|5K) |
Colorado Springs, Colorado, United States |
| 16 May 2026 |
Quest for the Crest Trail Races (50K) |
Burnsville, North Carolina, United States |
| 16 May 2026 |
Keys 100 (100 Miles) |
Newport, Florida, United States |
| 16 May 2026 |
Massanutten Mountain Trails 100 (100 Miler) |
Kings Crossing, Virginia, United States |
| 16 May 2026 |
Silver State (50 Miler|50K|1/2 Marathon) |
Washoe County, Nevada, United States |
| 16 May 2026 |
UTAH 50K (50kms) |
Kanab, Utah, United States |
| 16 May 2026 |
Dances with Dirt Gnaw Bone (13.1M|10K|50K|26.2M|50M) |
Nashville, Indiana, United States |
| 16 May 2026 |
North Downs Way 50 (50 Miles) |
Waverley, England, United Kingdom |
| 17 May 2026 |
Life Time Chicago Spring Half Marathon + 10K (Half Marathon) |
Chicago, Illinois, United States |
| 23 May 2026 |
Grand Union Canal (145 Miles) |
Birmingham, England, United Kingdom |
| 23 May 2026 |
Nanny Goat 100 (100 Miler) |
Riverside, California, United States |
| 23-24 May 2026 |
Calgary Marathon (Kids Race|Half Marathon|10K|5K|50K|Marathon) |
Calgary, Alberta, Canada |
| 23-25 May 2026 |
Stumptown Trail Runs (1/2 Marathon|50K) |
Portland, Oregon, United States |
| 23 May - 20 Jun 2026 |
Bear Mountain (12 km|21 km|8 km) |
Mission, British Columbia, Canada |
| 23 May 2026 |
Pigtails Challenge (100 Miler) |
King County, Washington, United States |
| 23 May 2026 |
Top of Michigan Festival of Races (Half Marathon|5k|10k) |
Petoskey, Michigan, United States |
| 30 May 2026 |
Smith Rock Classic (10 Mile|50K|50 Mile) |
Jefferson County, Oregon, United States |
| 30 May 2026 |
Worlds End Ultramarathon 100K - 2025 (100K) |
Forksville, Pennsylvania, United States |
| 30 May 2026 |
Xterra Crystal Cove Trail Run (15k|6k) |
Newport Beach, California, United States |