October Ultras in the USA
Concrete, WA
Baker Lake 50K
Oct 3, 2020
Greensboro, NC
Triple Lakes Trail Race
Oct 30, 2021
Sausalito, CA
Marine Mammal Ultra
Oct 19, 2019
Titusville, NJ
Trails4Tails Fest
Oct 16, 2021
Perryville, AR
Arkansas Traveller 100
Oct 3, 2020
Holland, MI
Ultra Bird Trail Races
Oct 23, 2021
Glen Rose, TX
Dallas Spartan Trail
Oct 22, 2021
Oct 24, 2021
Greenbush, WI
Glacial Trail 50 Mile & 50K
Oct 10, 2021
Kennesaw, GA
General 100
Oct 16, 2021
Sterling, IL
Hennepin Hundred
Oct 2, 2021
Flagstaff, AZ
Flagstaff Sky Peaks Mountain Runs
Oct 5, 2019
Fountain Hills, AZ
Javelina Jundred
Oct 30, 2021
Cedar City, UT
Cedar City Thunderbird 50K
Oct 17, 2020
Newcastle, WA
Cougar Mountain Trail Running Series
Jun 13, 2020
Jul 11, 2020
Aug 8, 2020
Sep 5, 2020
1 more
Deerfield Beach, FL
PALM100 Ultras
Oct 26, 2019
Waynesville, OH
Broken Toe 50K
Oct 17, 2020
Bellingham, WA
Trails to Taps Relay
Oct 18, 2020
Douglas, MA
Midstate Massive Ultra Trail
Oct 9, 2021
Morristown, TN
Dirt Circuit
Oct 23, 2021
Staten Island, NY
Conference House Endurance Challenge
Oct 5, 2019
Solon, IA
Hawkeye 50K & 25K
Oct 24, 2020
Franklin, NC
Naturalist - Epic 50K, 25K
Oct 3, 2020
Bend, OR
HTC High Desert
Oct 2, 2021
Dayton, OH
OX 12 Hour Endurance Run
Oct 3, 2020
Boalsburg, PA
Tussey Mountainback 50 Mile Relay and Ultra
Oct 24, 2021
Duluth, MN
Wild Duluth Races
Oct 17, 2020
Crested Butte, CO
Crested Butte Ultra
Oct 2, 2021
Kings Park, NY
Fred von der Heydt Memorial 6 Hour Birthday Run
Oct 20, 2019
Dubuque, IA
Mines of Spain 100
Oct 15, 2021
Naples, FL
Gulf to Gulf 80 Mile Relay
Oct 17, 2020
Newport, OR
Dia De Los Muertos Endurance Run
Oct 30, 2021
Colorado Springs, CO
Cheyenne Mountain Trail Race
Oct 24, 2020
Bear Creek Endurance Run
Oct 2, 2021
Fox Run Endurance Run
Oct 23, 2021
East Peoria, IL
Farmdale Trail Run
Oct 12, 2019
Ardmore, OK
Lake Murray Endurance Run
Oct 23, 2021
Raleigh, NC
Tuna Relay 200
Oct 22, 2021
Canton, GA
Sleepy Hollow Hourly Ultra
Oct 10, 2020
Rocky Point, NY
Tesla Hertz Run
Oct 9, 2021
Charlotte, NC
WC-50 Ultra Trail Marathon
Oct 10, 2020
Emporium, PA
Sinnemahone Trail Run
Oct 16, 2021
Lake Charles, LA
Danimal 50K
Oct 19, 2019
Minneapolis, MN
Loopet Loppet
Oct 9, 2021
South Lake Tahoe, CA
Echo Summit Trail Challenge
Oct 2, 2021
Lake Tahoe Marathon
Oct 10, 2021
Oct 8, 2021
Oct 9, 2021
Fayetteville, AR
RAPTOR Adventure Series
Oct 25, 2020
Oct 25, 2020
Guilford, CT
Bimblers Bluff 50K
Oct 18, 2020
Bloomington, IN
Tecumseh Trail Marathon
Oct 23, 2021
Reading, PA
Blues Cruise 50K Trail Ultra
Oct 4, 2020
Canandaigua, NY
Can Lake 50 Ultras
Oct 9, 2021
Ft. Mill, SC
Ragnar Trail Carolinas
Oct 24, 2020
Santa Clarita, CA
Santa Clarita Ultra
Oct 24, 2020
Tacoma, WA
Defiance 50K
Oct 10, 2020
South Bend, IN
St Pats 24 Hour
Oct 19, 2019
Cincinnati, OH
Stone Steps 50K
Oct 24, 2021
Comfort, TX
Ragnar Trail Hill Country
Oct 16, 2020
Plymouth, MA
Long, Hard & Dirty Ultra
Oct 10, 2020
Chattanooga, TN
Rock/Creek Stump Jump Trail Race
Oct 2, 2021
Rochester Hills, MI
Thru The Leaves Ultra & Relay
Oct 3, 2020
Woodside, CA
Woodside Trail Run
Oct 31, 2020
Amherst, NH
Joe English Twilight Challenge
Oct 23, 2021
Adrian, MI
Heritage Trail Run
Oct 25, 2020
New London, WI
Mosquito Hill Endurance Run
Oct 16, 2021
Chapel Hill, NC
Jordan Lake 12-Hour Challenge
Oct 3, 2020
New York, NY
Manhattan Perimeter Relay
Oct 17, 2020
Holly, MI
Gravel Time
Oct 17, 2021
North Augusta, SC
FATS 50K
Oct 4, 2020
Spokane, WA
Chocolate Chip Cookie 50K Trail Run
Oct 26, 2019
Wilsonville, OR
ORRC Autumn Leaves Run
Oct 24, 2020
Corona, CA
Twin Peaks 50
Oct 17, 2020
San Francisco, CA
Pinkathon San Francisco
Oct 26, 2019
Ruth Anderson Memorial Endurance Run
Oct 9, 2021
Black River Falls, WI
Black River Trail Classic
Oct 17, 2020
Kirtland, OH
Outrun 24 Hour Trail Race
Oct 3, 2020
Charleston, WV
Monstrosity on Middle Ridge 12H Run
Oct 3, 2020
Arlington, VA
Marine Corps Marathon
Oct 25, 2020
Omaha, NE
G.O.A.T.z Trail Runs
Oct 18, 2020
Oakridge, OR
Willamette Headwaters Endurance Event
Oct 3, 2020
Oklahoma City, OK
24 The Hard Way Run
Oct 16, 2021
Cumberland, RI
Survival of the F.I.T.test 24 hour trail ultra
Oct 24, 2020
Columbia, MO
Rock Bridge Revenge
Oct 2, 2021
Albion, IN
Indiana Trail 100
Oct 9, 2021
San Antonio, TX
El Taco Loco
Oct 23, 2021
Reidsville, NC
Lost Runners 24
Oct 17, 2020
San Diego, CA
Lake Hodges Trail Fest
Oct 24, 2020
Windham, NY
Catskills P2B Relay
Oct 17, 2021
Waddell, AZ
Vertigo Night Runs
Oct 3, 2020
Chicago, IL
Chicago Lakefront 50K/50M
Oct 31, 2020
Belmont, OH
Barkcamp Race
Oct 3, 2020
Presque Isle, PA
Personal Endurance Classic
Oct 17, 2020
Lexington, KY
Bourbon Chase
Oct 23, 2020
Brainard, NE
Bohemian Alps 50K
Oct 9, 2021
Des Moines, IA
Equalizer Endurance Run
Oct 26, 2019
Mountainside, NJ
Squatchung Surprise
Oct 2, 2021
New Gloucester, ME
Royal River Relay
Oct 17, 2020
Saratoga, CA
Skyline to the Sea
Oct 3, 2020
Oct 4, 2020
Wausau, WI
IRONBULL Ultra Trail 50K/15K
Oct 2, 2021
Baltimore, MD
Patapsco Valley 50K
Oct 24, 2020
Gills Rock, WI
Fall 50 - Door County
Oct 24, 2020
Titusville, PA
Oil Creek 100 Trail Runs
Oct 10, 2020
Vernon Hills, IL
Des Plaines River Trail Races
Oct 9, 2021
Council Bluffs, IA
Yippee-Ki-Yay 50K
Oct 23, 2021
Simi Valley, CA
Rocky Peak Ultra Trail Race
Oct 17, 2020
Whitefish, MT
Whitefish Trail Legacy Run
Oct 4, 2020
Oct 3, 2020
Wolf Creek, MT
Wolf Creek Canyon Relay
Oct 3, 2021
Tahlequah, OK
Pumpkin Holler Hunnerd
Oct 16, 2021
Gunnison, CO
Sage Burner Trail Run
Oct 16, 2021
Circleville, WV
West Virginia Trilogy
Oct 9, 2020
Oct 10, 2020
Oct 11, 2020
Augusta, NJ
NJ Trail Series One Day
Oct 3, 2020
Apalachicola, FL
Running for the Bay! Marathon
Oct 20, 2019
Blue Ridge, GA
Blue Ridge Ultra
Oct 9, 2021
Cannon Beach, OR
Gorgeous Coast Relay
Oct 4, 2020
Sisters, OR
Three Sisters Skyline
Oct 3, 2021
Oct 2, 2021
Cortland, NY
Finger Lakes P2B Relay
Oct 17, 2020
Faust, UT
Pony Express Trail 100
Oct 15, 2021
Laurel, DE
Trap Pond 50K
Oct 4, 2020
Savage, MN
Surf The Murph
Oct 24, 2020
Pilot Mountain, NC
Pilot Mountain to Hanging Rock Trail Ultras
Oct 2, 2021
Kaysville, UT
DC Peaks 50
Oct 9, 2021
Powhatan, VA
Piedmont 8 Hour
Oct 24, 2020
Brunswick, MD
River's Edge Endurance Challenge
Oct 9, 2021
Ringgold, GA
General 100
Oct 16, 2021
Fries, VA
New River Trail 50K/25K
Oct 12, 2019
Burns, TN
Mo' Bell
Oct 10, 2020
Oct 11, 2020
East Memphis, TN
Haiti Medical Missions 24 Hour Tour d'Esprit
Oct 11, 2019
Port St Joe, FL
50 For Florida
Oct 10, 2020
Derwood, MD
Rock the Creek Relay
Oct 4, 2020
Palm Coast, FL
Jacks Trail Race
Oct 25, 2020
Alabaster, AL
Endless Mile
Oct 16, 2020
Oct 17, 2020
Wellsboro, PA
Green Monster Trail Challenge
Oct 10, 2021
Richfield, OH
Crowell Hilaka trail run
Oct 17, 2021
Canton, MS
Way's Bluff
Oct 10, 2020
Clermont, KY
Bourbon Chase
Oct 23, 2020
Ashford, CT
NipMuck Trail Marathon
Oct 3, 2021
Alpine, TX
Trans-Pecos Ultra
Oct 17, 2021
Middleville, MI
Yankee Springs Fall Festival
Oct 3, 2020
Tillamook, OR
Elk-Kings Trail Races
Oct 2, 2021
Alachua, FL
Gate2Gate Trail Run
Oct 24, 2020
Garrison, NY
Castle to River Run
Oct 24, 2020
Los Olivos, CA
Back on the Ranch
Oct 2, 2021
Amherst, NY
Buffalo Runners 6 Hour Classic
Oct 11, 2020
Meriden, KS
Lake Perry Rocks
Oct 5, 2019
Pisgah Forest, NC
Pisgah 55.5K Running Race
Oct 10, 2020
Gold Beach, OR
Secret Beach 100K/50M
Oct 3, 2020
Moncks Corner, SC
Revenge of the Stede Bonnet
Oct 2, 2021
Los Altos, CA
Vista Verde Skyline Run
Oct 23, 2021
Farmersville, TX
Oktoberfest Trail Run Festival
Oct 16, 2021
Bald Head Island, NC
Badwater Cape Fear
Oct 2, 2021
Lillington, NC
Cape Fear 24H Endurance Run
Oct 9, 2021
Palo Duro Canyon State Park, TX
Palo Duro Trail Run
Oct 17, 2020
Kansasville, WI
Wolf Pack Trail Run & Relay
Oct 9, 2021
Borden, IN
Knobstone Knockout
Oct 11, 2020
Sebastopol, CA
Gravenstein 8 Hour
Oct 30, 2021
Dugway, UT
Dugway Trail and Ultra Run
Oct 3, 2020
Mokuleia, HI
Peacock Challenge
Oct 17, 2020
Jamestown, TN
No Business 100
Oct 1, 2021
Cornwall, CT
Mohawk Mountain Race
Oct 11, 2020
Sedalia, CO
Indian Creek Fifties
Oct 16, 2021
Norton, VA
Cloudsplitter 100
Oct 16, 2021
Pinson, TN
Dream Chaser
Oct 5, 2019
Hewitt, NJ
Ragnar Trail Wawayanda Lake
Oct 3, 2020
Port Gamble, WA
Lumberjack Endurance Runs
Jun 13, 2020
Oct 17, 2020
Polebridge, MT
Le Grizz Ultramarathon
Oct 10, 2020
Hanalei, HI
EPIC5 Ultra Run Challenge
Oct 22, 2021
Scotts, MI
Furlong 250
Oct 17, 2020
Arrington, VA
Virginia Spartan Trail
Oct 29, 2021
Oct 31, 2021
Pocahontas, TN
Walking Tall 50K/25K
Oct 16, 2021
Mill Spring, NC
Dark Horse Ultra
Oct 31, 2021
Nov 1, 2021
Pamplin, VA
High Bridge Ultra 50K
Oct 10, 2020
Colden, NY
Tamarack Big Beast
Oct 24, 2020
Grapeland, TX
Mission Tejas Trail Run
Oct 9, 2021
Canton, SD
Glacier Hills Ultra
Oct 23, 2021
Tonalea, AZ
Naatsisaan Trail Ultra
Oct 31, 2020
Copperhill, TN
Big Frog Trail Runs
Oct 3, 2021
Upper Black Eddy, PA
Muleskinner
Oct 12, 2019
Runsylvania Family Run Fest
Oct 12, 2019
North Bend, PA
Black Forest Ultra 100K
Oct 3, 2021
Vesuvius, VA
Monte Vino Races - 12 Ridges Vineyard
Oct 17, 2020
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| Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
City Location
1. No Business 100
-
Oct 1, 2021Friday
-
100M trail run
Race Website
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Jamestown, TN
Fentress County, TN
2. Sawtooth Women's Trail Running Weekend
-
Oct 1, 2021Friday
-
30M, 15M trail run
More Information
-
Twisp, WA
Okanogan County, WA
3. Bear Creek Endurance Run
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Oct 2, 2021Saturday
-
12H trail run
More Information
-
Colorado Springs, CO
El Paso County, CO
4. Back on the Ranch
-
Oct 2, 2021Saturday
-
24H, 12H, 6H run
More Information
-
Los Olivos, CA
Santa Barbara County, CA
5. Badwater Cape Fear
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Oct 2, 2021Saturday
-
50M, 50K run
Race Web Page
-
Bald Head Island, NC
Brunswick County, NC
6. Crested Butte Ultra
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Oct 2, 2021Saturday
-
105K, 55K trail run
More Information
-
Crested Butte, CO
Gunnison County, CO
7. Echo Summit Trail Challenge
-
Oct 2, 2021Saturday
-
50M, 50K, 26.2M, 20M, 10M trail run
More Information
-
South Lake Tahoe, CA
El Dorado County, CA
8. Elk-Kings Trail Races
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Oct 2, 2021Saturday
-
50K, 27.5M, 25K trail run
Race Web Page
-
Tillamook, OR
Tillamook County, OR
9. Hennepin Hundred
-
Oct 2, 2021Saturday
-
100M, 50M, 50K trail run
More Information
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Sterling, IL
Whiteside County, IL
10. HTC High Desert
-
Oct 2, 2021Saturday
-
71M relay
More Information
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Bend, OR
Deschutes County, OR
11. IRONBULL Ultra Trail 50K/15K
-
Oct 2, 2021Saturday
-
50K, 15K trail run
More Information
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Wausau, WI
Marathon County, WI
12. Pilot Mountain to Hanging Rock Trail Ultras
-
Oct 2, 2021Saturday
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50M, 50K trail run | 50M relay
More Information
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startPilot Mountain, NCfinishDanbury, NCSurry County, NCStokes County, NC
13. Revenge of the Stede Bonnet
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Oct 2, 2021Saturday
-
10H, 15M, 5M trail run
More Information
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Moncks Corner, SC
Berkeley County, SC
14. Rock Bridge Revenge
-
Oct 2, 2021Saturday
-
50K, 25K trail run
More Information
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Columbia, MO
Boone County, MO
15. Rock/Creek Stump Jump Trail Race
-
Oct 2, 2021Saturday
-
50K, 11M trail run
Race Information
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Chattanooga, TN
Hamilton County, TN
16. Squatchung Surprise
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TentativeOct 2, 2021Saturday
-
9H, 6H, 3H, 5K trail run
More Information
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Mountainside, NJ
Union County, NJ
17. Arkansas Traveller 100
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CancelledOct 3, 2020Saturday
-
100M trail run
Race Web Page
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Perryville, AR
Perry County, AR
18. Baker Lake 50K
-
CancelledOct 3, 2020Saturday
-
50K trail run
Race Website
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Concrete, WA
Skagit County, WA
19. Barkcamp Race
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CancelledOct 3, 2020Saturday
-
40M, 26.2M, 13.1M, 20K, 10K run
Race Web Page
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Belmont, OH
Belmont County, OH
20. Big Frog Trail Runs
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TentativeOct 3, 2021Sunday
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50K, 13.1M, 7M trail run
More Information
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Copperhill, TN
Polk County, TN
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.