| 20 Aug 2027 |
Marquette 50 (50 Miler|50K) |
Forestville, Michigan, United States |
| 21 Aug 2027 |
Backcountry Rise (50K|20 Miler|Half Marathon) |
Toutle, Washington, United States |
| 21 Aug 2027 |
Shawnee Hills 100 (100K|100 Miler|50K) |
Ozark, Illinois, United States |
| 21 Aug 2027 |
Life Time Leadville Trail 100 Run (100 Miles) |
Leadville, Colorado, United States |
| 21 Aug 2027 |
Moose Mountain Trail Races (42K|29K) |
Bragg Creek, Alberta, Canada |
| 21 Aug 2027 |
Habanero Hundred (100 Miler) |
Austin County, Texas, United States |
| 22 Aug 2027 |
Garmin Marathon Ventura (Marathon|Half Marathon|10K|5K) |
Ventura, California, United States |
| 28 Aug 2027 |
Jackrabbit Jubilee (12 Hour|6 Hour) |
Buckeye, Arizona, United States |
| 28 Aug 2027 |
Rock Hawk Trail Races (10K|5K|25K|50K) |
Castle Rock, Colorado, United States |
| 28 Aug 2027 |
Leeds & Liverpool Canal (130 Miles) |
Liverpool, England, United Kingdom |
| 28 Aug 2027 |
Linganore Haunted Wine Run 5k (5K) |
Mt. Airy, Maryland, United States |
| 28 Aug 2027 |
Cedar Creek Haunted Wine Run 5k (5K) |
Martinsville, Indiana, United States |
| 28 Aug 2027 |
Great White Ultra (GWU60|GWU24|GWU100|GWU5) |
Port Lincoln, South Australia, Australia |
| 28 Aug 2027 |
Summit Forests Kaitaia Trail Run/Walk (Half Marathon|4km|11.5km) |
Kaitaia / Awanui, Northland, New Zealand |
| 28 Aug 2027 |
Enoree Haunted Wine Run 5k (5K) |
Newberry, South Carolina, United States |
| 28 Aug 2027 |
Spencer Farm Haunted Wine Run 5k (5K) |
Noblesville, Indiana, United States |
| 04 Sep 2027 |
Wildcat 100 (100 Miler) |
Beulah, Florida, United States |
| 04 Sep 2027 |
Malaysia Ultra-Trail by UTMB (MY100|MY50|MY25|MY13) |
Taiping, Perak, Malaysia |
| 05 Sep 2027 |
Kauai Marathon (Marathon|Half Marathon) |
Poipu, Hawaii, United States |
| 05 Sep 2027 |
TCS Big Half (Half Marathon) |
Greater London, England, United Kingdom |
| 06 Sep 2027 |
Mt. Baldy Run-to-the-Top (7.1 Miles) |
Mt. Baldy, California, United States |
| 10-11 Sep 2027 |
Superior Fall Trail Race (50 Miles|26.2 Miles|100 Miles) |
Castle Danger, Minnesota, United States |
| 10-12 Sep 2027 |
Wildstrubel by UTMB (Wild 110 Crans-Montana|Wild 55 Adelboden|Wild Glacier Marathon Lenk|Wild 25 Leukerbad|Wild 10 Crans-Montana|Wild 70 Kandersteg) |
Crans-montana, Valais, Switzerland |
| 10-11 Sep 2027 |
Run Woodstock (5M|50M|100K|100M|26.2M|13.1M|50K) |
Gregory, Michigan, United States |
| 10-12 Sep 2027 |
JD Ultra-Trail Great Wall by UTMB (CGW70|NGW30|MGW50|DGW100) |
Zhangjiakou, Hebei, China |
| 10-12 Sep 2027 |
Ultra-Trail Harricana du Canada (125 km|80 km|65 km|42 km|28 km|20 km|10 km|5 km) |
La Malbaie, Quebec, Canada |
| 10-11 Sep 2027 |
Lost Soul Ultra (50K|100K|100 Mile) |
Lethbridge, Alberta, Canada |
| 10 Sep 2027 |
Woodstock Festival (Hallucination 100 Mile) |
Livingston County, Michigan, United States |
| 10-12 Sep 2027 |
The Rut Mountain Runs (VK|11k|28k|50k) |
Big Sky, Montana, United States |
| 11 Sep 2027 |
Rock 'N The Knob Trail Challenge (Mountain Marathon|Half-Marathon|Short Course (10K-ish)) |
Claysburg, Pennsylvania, United States |
| 11 Sep 2027 |
Pine Creek Challenge (100K|100 Miler) |
Marsh Creek, Pennsylvania, United States |
| 11 Sep 2027 |
Big Cottonwood (Half Marathon|Marathon) |
Salt Lake City, Utah, United States |
| 11-12 Sep 2027 |
Finlayson Arm (28K|50K) |
Victoria, British Columbia, Canada |
| 11 Sep 2027 |
Race to Cure Sarcoma 5k - NC (5k) |
Cary, North Carolina, United States |
| 11 Sep 2027 |
Kaçkar by UTMB (KAÇKAR 100K|KAÇKAR 50K|KAÇKAR 20K|AYDER 4K) |
Ayder, Rize, Türkiye |
| 12 Sep 2027 |
Fyfield Footpath 5K & 10K (10K|5K) |
Fyfield, Essex, United Kingdom |
| 17-26 Sep 2027 |
Julian Alps Trail Run by UTMB (I FEEL SLOVENIA 120K|SKY TRAIL 50K|KRANJSKA GORA 25K|LAKE BLED 80K|INTERSPORT SPEED 15K) |
Kranjska Gora, Upper Carniola, Slovenia |
| 17-18 Sep 2027 |
Côte d'Azur (100M|100K|50K) |
Saint-étienne-de-tinée, Provence-Alpes-Côte-d’Azur, France |
| 17-18 Sep 2027 |
Snowbasin by UTMB (58K|28K) |
Ogden, Utah, United States |
| 18 Sep 2027 |
Stagecoach (100M MTB|100M Run) |
Coconino County, Arizona, United States |
| 18 Sep 2027 |
Bryce Canyon Ultras (50k|100 Miler|50 Miler|30K|60K|Half Marathon) |
Bryce Canyon, Utah, United States |
| 18 Sep 2027 |
Life Time Chequamegon MTB Festival (Short & Fat|Chequamegon 40) |
Hayward, Wisconsin, United States |
| 18 Sep 2027 |
Jangover Night Runs (15K|25K|50K|75K|7K) |
Fort Mcdowell, Arizona, United States |
| 18 Sep 2027 |
Chiltern Wonderland 50 (50 Miles) |
South Oxfordshire, England, United Kingdom |
| 18 Sep 2027 |
Skyline Scotland (Ring of Steall|Ben Nevis Ultra|Glen Coe Skyline) |
Kinlochleven, Scotland, United Kingdom |
| 18 Sep 2027 |
Mountain Lakes 100 (100 Miler) |
Olallie Lake, Oregon, United States |
| 18 Sep 2027 |
Pikes Peak Ascent & Marathon (Half Marathon|Marathon) |
Manitou Springs, Colorado, United States |
| 18 Sep 2027 |
Captain Jack's Treasure Run (5K|8K|12K) |
Redmond, Washington, United States |
| 19 Sep 2027 |
Sioux Falls Marathon (Marathon) |
Sioux Falls, South Dakota, United States |
| 19 Sep 2027 |
Yellowstone Gateway 30K (30K) |
Pray, Mt 59065, Montana, United States |
| 19 Sep 2027 |
WW X Tri Prime View 2025 (Bike|Run) |
Olifantsfontein, Western Cape, South Africa |
| 24 Sep 2027 |
The Bear (100 Miler) |
Logan, Utah, United States |
| 24 Sep 2027 |
Yeti 100 Mile Endurance Run (100 Miler) |
Whitetop, Virginia, United States |
| 24-25 Sep 2027 |
TransJeju by UTMB (Jeju60K|Jeju100M|Jeju100K|Jeju20K) |
Seogwipo-si, Jeju, South Korea |
| 24 Sep 2027 |
13 Valleys (180km) |
Keswick, Cumbria, United Kingdom |
| 24-25 Sep 2027 |
Grindstone Trail Running Festival by UTMB (100M|100K|50K|21K) |
Mount Solon, Virginia, United States |
| 24-26 Sep 2027 |
Paraty Brazil by UTMB (PTR 108|PTR 58|PTR 34|PTR 25|PTR 17|RUN 7) |
Paraty, Rio de Janeiro, Brazil |
| 24-25 Sep 2027 |
Chihuahua by UTMB (Rarámuri 100M|Weriga 93K|Napurega 21K|Komakali 39K|Akáa 58K|Norawa 9K) |
Chihuahua, Chihuahua, Mexico |
| 25 Sep 2027 |
Crested Butte Ultra (55K|50 Miler|35K) |
Crested Butte, Colorado, United States |
| 25 Sep 2027 |
Whangamatā Half Marathon (5km|10km|Half Marathon) |
Whangamatā, Waikato, New Zealand |
| 26 Sep 2027 |
Scrumpy Skedaddle (10M|10K|5K) |
Flushing, Michigan, United States |
| 26 Sep 2027 |
The Blue Run (5K Run & Walk) |
Kingston, Saint Andrew, Jamaica |
| 26 Sep 2027 |
NorthCloud Whangarei Half Marathon (NorthCloud Whangarei Half Marathon|8.9km|4.4km) |
Whangārei, Northland, New Zealand |
| 26 Sep 2027 |
BMW Berlin Marathon (Marathon) |
Berlin, Berlin, Germany |
| 26 Sep 2027 |
Vitality London 10,000 (10K) |
City Of Westminster, England, United Kingdom |
| 26 Sep 2027 |
Loch Ness Marathon (Marathon) |
Highland, Scotland, United Kingdom |
| 26 Sep 2027 |
Niswonger Children's Hospital Scarecrow Skedaddle (1 Mile|5K) |
Johnson City, Tennessee, United States |
| 26 Sep 2027 |
Bridge 4 Hope 4K & 8K (4K|8K) |
Erwin, Tennessee, United States |
| 02 Oct 2027 |
Arches Marathon and Half (50K|Marathon|15K|1/2 Marathon) |
Moab, Utah, United States |
| 02 Oct 2027 |
Cuyamaca 100K (100K) |
Julian, California, United States |
| 02 Oct 2027 |
Hennepin Hundred (100 Miler) |
Whiteside County, Illinois, United States |
| 02 Oct 2027 |
Tour of the White Mountains (35 Mile|30 Mile Gravel|50 Mile|18 Mile|9 Mile) |
Pinetop-lakeside, Arizona, United States |
| 02 Oct 2027 |
Running Between the Vines (5K|5M|13.1M) |
Jackson, Michigan, United States |
| 02 Oct 2027 |
Runtheberg Ultra 2027 (RTB 25|RTB Ultra 65|RTB 13|RTB Marathon 42) |
Bergville, KwaZulu-Natal, South Africa |
| 03 Oct 2027 |
Pasqua Peaks Trail Race (13k|5k|26k) |
Fort Qu'appelle, Saskatchewan, Canada |
| 03 Oct 2027 |
Black Forest Ultra (100 km) |
North Bend, Pennsylvania, United States |
| 03 Oct 2027 |
Portland Marathon (Marathon) |
Portland, Oregon, United States |
| 03 Oct 2027 |
2XU Long Beach Marathon (Marathon) |
Long Beach, California, United States |
| 07 Oct 2027 |
Hood to Coast (Relay) |
Mt. Hood, Oregon, United States |
| 8-9 Oct 2027 |
Kodiak (21K|50K|100K|100 Miler|10K) |
Big Bear Lake, California, United States |
| 08 Oct 2027 |
Moab 240 Endurance Run (240 Miler) |
Moab, Utah, United States |
| 8-10 Oct 2027 |
Ultra-Trail Mount Yun by UTMB (MMY 50K|EMY 20K|DMY 100K|UMY 100M) |
Guanwangmiao Township, Shanxi, China |
| 08 Oct 2027 |
Tesla Hertz Run (Loop) |
Suffolk County, New York, United States |
| 8-10 Oct 2027 |
Puglia by UTMB (I Sassi di Matera 145K|Castellaneta Underground Trail 50K|Le Maioliche di Laterza 85K|Ginosa Rivolta Trail 35K|Costa Verde Trail 10K) |
Castellaneta Marina, Taranto, Italy |
| 9-10 Oct 2027 |
Midstate Massive Ultra Trail (30 Miler|50 Miler|100 Miler) |
Charlton, Massachusetts, United States |
| 09 Oct 2027 |
Jared Coones Pumpkin Run 5K (5K) |
Olathe, Kansas, United States |
| 10 Oct 2027 |
Chicago Marathon (Marathon) |
Chicago, Illinois, United States |
| 10 Oct 2027 |
Steamtown Marathon (26.2 Miles) |
Forest City, Pennsylvania, United States |
| 15 Oct 2027 |
Mines of Spain 100 (100K|100 Miler) |
Dubuque, Iowa, United States |
| 16 Oct 2027 |
Elk-Kings 25k/50k (25K|50K) |
Tillamook, Oregon, United States |
| 17 Oct 2027 |
Paine to Pain (Half Marathon) |
Westchester County, New York, United States |
| 23 Oct 2027 |
Greasy-Gooney 10K (10K) |
Browntown, Virginia, United States |
| 23 Oct 2027 |
BOO & BREW 5K (Boo & Brew 5K) |
Wilmington, Delaware, United States |
| 23 Oct 2027 |
OctoberFit Races 5K/10K Presented by Planet Fitness Wichita (OctoberFit 10K|OctoberFit Races 5K) |
Wichita, Kansas, United States |
| 23 Oct 2027 |
Cliff Hanger Run (5K|8K) |
Kansas City, Missouri, United States |
| 23 Oct 2027 |
Race to Beat Breast Cancer 5K Run/Walk (5K) |
Harrisonburg, Virginia, United States |
| 23 Oct 2027 |
Washington Parish Fair 5K (5K) |
Franklinton, Louisiana, United States |
| 23 Oct 2027 |
Prisoner of War Trail Race (50k - 25k - 8mi) (25K|50K|8 Miles) |
Spartanburg, South Carolina, United States |
| 23 Oct 2027 |
Andover Norton Commission Trick or Trot 5K Run/Walk and Kids 1 K Fun Run (5K) |
Andover, Connecticut, United States |
| 23 Oct 2027 |
WXT Ultra (25K|50K) |
Titusville, New Jersey, United States |