October Ultras in the USA
Santa Barbara, CA
Santa Barbara Endurance Run
Oct 12, 2019
Concrete, WA
Baker Lake 50K
Oct 5, 2019
Greensboro, NC
Triple Lakes Trail Race
Oct 26, 2019
San Luis Obispo, CA
Slo ULTRA
Oct 26, 2019
Titusville, NJ
Trails4Tails Fest
Oct 19, 2019
Perryville, AR
Arkansas Traveller 100
Oct 6, 2018
Greenbush, WI
Glacial Trail 50K & 50 Mile Run
Oct 14, 2018
Kennesaw, GA
General 100
Oct 6, 2018
Sterling, IL
Hennepin Hundred
Oct 5, 2019
Flagstaff, AZ
Flagstaff Sky Peaks Mountain Runs
Oct 5, 2019
Fountain Hills, AZ
Javelina Jundred
Oct 26, 2019
Cedar City, UT
Cedar City Thunderbird 50K
Oct 12, 2019
Deerfield Beach, FL
PALM100 Ultras
Oct 27, 2018
Waynesville, OH
Broken Toe 50K/25K
Oct 20, 2018
Franklin, NC
Naturalist - Epic 50K, 25K
Oct 5, 2019
Dayton, OH
MOX 12 Hour Endurance Run
Oct 5, 2019
Boalsburg, PA
Tussey Mountainback 50 Mile Relay and Ultra
Oct 27, 2019
Thonotosassa, FL
Anti-Hero Series: E. Brock Trail Races
Oct 6, 2018
Eureka Springs, AR
Outback In The Ozarks
Oct 26, 2018
Cedar Falls, IA
Runner's Flat 50K
Oct 13, 2018
Duluth, MN
Wild Duluth Races
Oct 20, 2018
Columbus, GA
Columbus Day Relay
Oct 12, 2019
Pine Mountain, GA
Big 50
Oct 20, 2018
Kings Park, NY
Fred von der Heydt Memorial 6 Hour Birthday Run
Oct 14, 2018
Naples, FL
Gulf to Gulf 80 Mile Relay
Oct 20, 2018
East Peoria, IL
Farmdale Trail Run
Oct 6, 2018
Cave Creek, AZ
Cave Creek Thriller Trail Runs
Oct 12, 2019
Raleigh, NC
Tuna Run 200
Oct 25, 2019
Canton, GA
Sleepy Hollow Hourly Ultra
Oct 13, 2018
Bandera, TX
Cactus Rose 100 Mile
Oct 26, 2019
Rocky Point, NY
Tesla Hertz Run
Oct 12, 2019
Charlotte, NC
WC-50 Ultra Trail Marathon
Oct 26, 2019
Emporium, PA
Sinnemahone Trail Run
Oct 20, 2018
Lake Charles, LA
Danimal 50K
Oct 20, 2018
Issaquah, WA
Cougar Mountain Trail Run - Fall
Oct 28, 2018
Minneapolis, MN
Loopet Loppet
Oct 13, 2019
South Lake Tahoe, CA
Lake Tahoe Marathon - Day 2
Oct 12, 2019
Lake Tahoe Marathon - Day 3
Oct 13, 2019
Guilford, CT
Bimblers Bluff 50K
Oct 20, 2019
Bloomington, IN
Tecumseh Trail Marathon
Oct 26, 2019
Henderson, NV
Run The Canyons
Oct 19, 2018
Reading, PA
Blues Cruise 50K Trail Ultra
Oct 6, 2019
Canandaigua, NY
Can Lake 50 Ultra
Oct 12, 2019
Ft. Mill, SC
Ragnar Trail Carolinas
Oct 5, 2019
Moab, UT
Moab 240
Oct 12, 2018
Libertyville, IL
Des Plaines River Trail Races
Oct 12, 2019
Las Cruces, NM
Day of the Dead Marathon Series
Oct 31, 2019 - Day 1
Nov 1, 2019 - Day 2
Nov 2, 2019 - Day 3
Nov 3, 2019 - Day 4
Tacoma, WA
Defiance 50K
Oct 12, 2019
South Bend, IN
St Pats 24 Hour
Oct 19, 2019
Comfort, TX
Ragnar Trail Hill Country
Oct 18, 2019
Rochester Hills, MI
Thru The Leaves Ultra & Relay
Oct 5, 2019
New London, WI
Mosquito Hill Endurance Run
Oct 19, 2019
Castle Rock, CO
Castle Rock Trail Festival
Oct 5, 2019
Brooksville, FL
John Holmes Trail Run
Oct 6, 2018
Louisville, KY
Elevate 50K
Oct 12, 2019
La Crosse, WI
Hixon Trail Runs
Oct 27, 2019
North Augusta, SC
FATS 50K
Oct 6, 2019
Spokane, WA
Chocolate Chip Cookie 50K Trail Run
Oct 26, 2019
Boise, ID
Foothills 50K Frenzy
Oct 6, 2018
Wilsonville, OR
ORRC Autumn Leaves Run
Oct 26, 2019
San Francisco, CA
Ruth Anderson Memorial Endurance Run
Oct 12, 2019
Black River Falls, WI
Black River Trail Classic
Oct 19, 2019
Oakridge, OR
Willamette Headwaters Endurance Event
Oct 6, 2018
Oklahoma City, OK
24 The Hard Way Run
Oct 19, 2019
Columbia, MO
Rock Bridge Revenge
Oct 5, 2019
Albion, IN
Indiana Trail 100
Oct 12, 2019
San Diego, CA
Lake Hodges Trail Fest
Oct 27, 2019
Chicago, IL
Chicago Lakefront 50K/50M
Oct 27, 2018
Presque Isle, PA
Personal Endurance Classic
Oct 20, 2018
Lexington, KY
Bourbon Chase
Oct 18, 2019
Ellicott City, MD
Patapsco Valley 50K
Oct 26, 2019
Des Moines, IA
Equalizer Endurance Run
Oct 27, 2018
Saratoga, CA
Skyline to the Sea
Oct 5, 2019
Castro Valley, CA
Bay Ridge 100K
Oct 5, 2019
Dick Collins Firetrails 50
Oct 5, 2019
Gills Rock, WI
Fall 50 - Door County
Oct 26, 2019
Titusville, PA
Oil Creek 100 Trail Runs
Oct 12, 2019
Simi Valley, CA
Rocky Peak Ultra Trail Race
Oct 19, 2019
Wolf Creek, MT
Wolf Creek Canyon Relay
Oct 7, 2018
Tahlequah, OK
Pumpkin Holler Hunnerd
Oct 20, 2018
Gunnison, CO
Sage Burner Trail Run
Oct 26, 2019
Circleville, WV
West Virginia Trilogy - Day 1
Oct 11, 2019
West Virginia Trilogy - Day 2
Oct 12, 2019
Apalachicola, FL
Running for the Bay! Marathon
Oct 20, 2019
Cannon Beach, OR
Gorgeous Coast Relay
Oct 6, 2019
Susanville, CA
Bizz Johnson
Oct 13, 2019
Swoope, VA
Grindstone 100
Oct 4, 2019
Fairfield, OH
Stone Steps 50K
Oct 27, 2019
Surfside Beach, TX
Orion Ultra
Oct 13, 2018
Faust, UT
Pony Express Trail 100
Oct 18, 2019
Savage, MN
Surf The Murph
Oct 19, 2019
Pilot Mountain, NC
Pilot Mountain to Hanging Rock Trail Ultras
Oct 12, 2019
Powhatan, VA
Piedmont 8 Hour
Oct 27, 2018
Laguna Beach, CA
Whoos Trail Races
Oct 20, 2018
Fries, VA
New River Trail 50K/25K
Oct 12, 2019
Port Allen, LA
Children of the Cane
Oct 6, 2018
East Memphis, TN
Haiti Medical Missions 24 Hour Tour d'Esprit
Oct 5, 2018
Pen Mar, PA
Quad State Quad Buster 46 Miles Run
Oct 19, 2019
Green River, UT
Goblin Valley Ultra
Oct 27, 2018
Palm Coast, FL
Jack's Trail Race
Oct 20, 2019
Alabaster, AL
Endless Mile 48 Hour Race & Relay
Oct 19, 2018
Endless Mile 24/12 Hour Race & Relay
Oct 20, 2018
Wellsboro, PA
Green Monster Trail Challenge
Oct 13, 2019
Canton, MS
Way's Bluff
Oct 19, 2019
Ashford, CT
NipMuck Trail Marathon
Oct 6, 2019
Greenville, MI
Bad Apple Ultra
Oct 27, 2018
Gregory, MI
Legend of the Dogman
Oct 19, 2019
Tillamook, OR
Elk-Kings Trail Races
Oct 12, 2019
Milford, PA
Water Gap
Oct 14, 2018
Ozark, IL
Ondessonk Trail Races
Oct 20, 2018
Beach City, OH
Whistling Pines 112
Oct 27, 2018
Alachua, FL
Gate2Gate Trail Run
Oct 20, 2018
Meriden, KS
Lake Perry Rocks
Oct 6, 2018
Gold Beach, OR
Secret Beach 100K/50M
Oct 5, 2019
Los Altos, CA
Vista Verde Skyline Run
Oct 26, 2019
Farmersville, TX
Oktoberfest Trail Run Festival
Oct 20, 2018
Vinton, IA
Doggone Tired Ultra
Oct 5, 2019
Brookline, NH
Ghost Train Rail Trail Races - Ultra Race
Oct 20, 2019
Palo Duro Canyon State Park, TX
Palo Duro Trail Run
Oct 20, 2018
Kansasville, WI
Wolf Pack Trail Run & Relay
Oct 20, 2019
Dugway, UT
Dugway Trail and Ultra Run
Oct 13, 2018
Mokuleia, HI
Peacock Challenge
Oct 19, 2019
Elkhorn City, KY
Cloudsplitter 100
Oct 12, 2019
Lolo, MT
Hootenanny 100K
Oct 6, 2019
Sedalia, CO
Indian Creek Fifties
Oct 12, 2019
Yachats, OR
Oregon Coast 50K
Oct 13, 2018
Pinson, TN
Dream Chaser
Oct 5, 2019
Hewitt, NJ
Ragnar Trail Wawayanda Lake
Oct 5, 2018
Polebridge, MT
Le Grizz Ultramarathon
Oct 13, 2018
Pocahontas, TN
Walking Tall 50/25K
Oct 19, 2019
Pamplin, VA
High Bridge Ultra 50K
Oct 12, 2019
Osawatomie, KS
Rush the Rails
Oct 6, 2018
Canton, SD
Glacier Hills Ultra
Oct 27, 2018
Tonalea, AZ
Naatsisaan Trail Ultra
Oct 26, 2019
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| Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
City Location
1. Grindstone 100
-
Oct 4, 2019Friday
-
100M run
Race Link
-
Swoope, VA
Augusta County, VA
2. Baker Lake 50K
-
Oct 5, 2019Saturday
-
50K trail run
Race Link
-
Concrete, WA
Skagit County, WA
3. Bay Ridge 100K
-
Oct 5, 2019Saturday
-
100K trail run
Race Link
-
Castro Valley, CA
Alameda County, CA
4. Castle Rock Trail Festival
-
Oct 5, 2019Saturday
-
50K, 26.2M, 13.1M, 10K, 5K trail run
Race Link
-
Castle Rock, CO
Douglas County, CO
5. Dick Collins Firetrails 50
-
Oct 5, 2019Saturday
-
50M run
Race Link
-
Castro Valley, CA
Alameda County, CA
6. Doggone Tired Ultra
-
Oct 5, 2019Saturday
-
50K, 10M trail run
Race Link
-
Vinton, IA
Benton County, IA
7. Dream Chaser
-
Oct 5, 2019Saturday
-
100M, 100K, 50M, 50K, 26.2M, 13.1M, 10K, 5K, 1M run
Race Link
-
Pinson, TN
Madison County, TN
8. Flagstaff Sky Peaks Mountain Runs
-
Oct 5, 2019Saturday
-
10K, 5K run | 50M, 50K, 25K, 10K, 5K trail run
Race Link
-
Flagstaff, AZ
Coconino County, AZ
9. Haiti Medical Missions 24 Hour Tour d'Esprit
-
Past DateOct 5, 2018Friday
-
24H run
Race Link
-
East Memphis, TN
Shelby County, TN
10. Hennepin Hundred
-
Oct 5, 2019Saturday
-
100M, 50M, 50K trail run
Race Link
-
Sterling, IL
Whiteside County, IL
11. Mount Bohemia Trail Running Festival
-
Oct 5, 2019Saturday
-
50K, 10K, 5K trail run
Race Link
-
Mohawk, MI
Keweenaw County, MI
12. MOX 12 Hour Endurance Run
-
Oct 5, 2019Saturday
-
12H run
Race Link
-
Dayton, OH
Montgomery County, OH
13. Naturalist - Epic 50K, 25K
-
Oct 5, 2019Saturday
-
50K, 25K run
Race Link
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Franklin, NC
Macon County, NC
14. Ragnar Trail Carolinas
-
Oct 5, 2019Saturday
-
125M relay
Race Link
-
Ft. Mill, SC
York County, SC
15. Ragnar Trail Wawayanda Lake
-
Past DateOct 5, 2018Friday
-
120M relay
Race Link
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Hewitt, NJ
Passaic County, NJ
16. Rock Bridge Revenge
-
Oct 5, 2019Saturday
-
50K, 25K, 7M trail run
Race Link
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Columbia, MO
Boone County, MO
17. Secret Beach 100K/50M
-
Oct 5, 2019Saturday
-
100K, 50M trail run
Race Link
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Gold Beach, OR
Curry County, OR
18. Skyline to the Sea
-
Oct 5, 2019Saturday
-
50K trail run
Race Link
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Saratoga, CA
Santa Clara County, CA
19. Swamp Rabbit Urban Ultra 50K
-
Oct 5, 2019Saturday
-
50K, 30K run
Race Link
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Greenville, SC
Greenville County, SC
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.