October Ultras in the USA
Greensboro, NC
Triple Lakes Trail Race
Oct 30, 2021
Ft. Worth, TX
Hula Loop 6-Hour Sunday Series - Race 3
Oct 10, 2021
Perryville, AR
Arkansas Traveller 100
Oct 2, 2021
Dallas, TX
Red River Relay
Oct 23, 2021
Holland, MI
Ultra Bird Trail Races
Oct 22, 2022
Greenbush, WI
Glacial Trail 50 Mile & 50K
Oct 9, 2022
Kennesaw, GA
General 100
Oct 16, 2021
Sterling, IL
Hennepin Hundred
Oct 1, 2022
Sacramento, CA
No'to'mom Endurance Runs
Oct 2, 2021
Flagstaff, AZ
Flagstaff Sky Peaks Mountain Runs
Oct 2, 2021
Belmont, NC
Rocky Branch Ultra
Oct 8, 2022
Fountain Hills, AZ
Javelina Jundred
Oct 29, 2022
Cedar City, UT
Cedar City Thunderbird 50K
Oct 17, 2020
Newcastle, WA
Cougar Mountain Trail Running Series
May 8, 2021
Jun 12, 2021
Jul 10, 2021
Aug 14, 2021
1 more
Deerfield Beach, FL
PALM100 Ultras
Oct 26, 2019
Douglas, MA
Midstate Massive Ultra Trail
Oct 8, 2022
Fayetteville, NY
East Coast 24 Hour Track Event
Oct 8, 2022
Morristown, TN
Dirt Circuit
Oct 1, 2022
Solon, IA
Hawkeye 50K & 25K
Oct 30, 2021
Franklin, NC
Naturalist - Epic 50K, 25K
Oct 2, 2021
Buffalo, NY
6 Hour Run @ SJCI
Oct 10, 2021
Bend, OR
Timberjack Ultramarathon
Oct 8, 2022
Dayton, OH
OX 12 Hour Endurance Run
Oct 2, 2021
Boalsburg, PA
Tussey Mountainback 50 Mile Relay and Ultra
Oct 31, 2021
Nashville, TN
Nashville Ultra Marathon
Oct 30, 2021
Duluth, MN
Wild Duluth Races
Oct 15, 2022
Columbus, GA
Columbus Day Relay
Oct 8, 2022
Denison, TX
Red River Relay
Oct 23, 2021
Crested Butte, CO
Crested Butte Ultra
Oct 2, 2021
Kings Park, NY
Fred von der Heydt Memorial 6 Hour Birthday Run
Oct 17, 2021
Dubuque, IA
Mines of Spain 100
Oct 14, 2022
Naples, FL
Gulf to Gulf 80 Mile Relay
Oct 23, 2021
Newport, OR
Dia De Los Muertos Endurance Run
Oct 29, 2022
Colorado Springs, CO
Bear Creek Endurance Run
Oct 2, 2021
Bobcat Trail Races
Oct 23, 2021
Fox Run Endurance Run
Oct 23, 2021
East Peoria, IL
Farmdale Trail Run
Oct 9, 2021
Woodinville, WA
Baker Lake 50K
Oct 2, 2021
Ardmore, OK
Lake Murray Endurance Run
Oct 23, 2021
Raleigh, NC
Tuna Relay 200
Oct 28, 2022
Moscow, ID
Moscow Mountain Madness
Oct 24, 2021
Canton, GA
Sleepy Hollow Hourly Ultra
Oct 10, 2020
Rocky Point, NY
Tesla Hertz Run
Oct 8, 2022
Charlotte, NC
Time Laps
Oct 22, 2021
Emporium, PA
Sinnemahone Trail Run
Oct 15, 2022
Minneapolis, MN
Loopet Loppet
Oct 10, 2021
South Lake Tahoe, CA
Lake Tahoe Marathon Weekend
Oct 16, 2022
Oct 14, 2022
Oct 15, 2022
Fayetteville, AR
Spartan Trail US Championship
Oct 30, 2021
Oct 31, 2021
Guilford, CT
Bimblers Bluff 50K
Oct 24, 2021
Anderson, SC
Sadlers Creek Stumble
Oct 22, 2022
Oct 23, 2022
Calabasas, CA
Bulldog Trail Runs
Oct 2, 2021
Bloomington, IN
Tecumseh Trail Marathon
Oct 23, 2021
Ohiopyle, PA
Fanny Pack 50K
Oct 9, 2021
Reading, PA
Blues Cruise 50K Trail Ultra
Oct 3, 2021
Canandaigua, NY
Can Lake 50 Ultras
Oct 8, 2022
Quincy, IL
1 MPH Marathon
Oct 8, 2021
Las Cruces, NM
Day of the Dead Series
Oct 29, 2022
Oct 30, 2022
Cincinnati, OH
Stone Steps 50K
Oct 24, 2021
Comfort, TX
Ragnar Trail Hill Country
Oct 15, 2021
Plymouth, MA
Long, Hard & Dirty Ultra
Oct 10, 2020
Chattanooga, TN
Rock/Creek Stump Jump Trail Race
Oct 2, 2021
Hampton, VA
Joe's Night Run At The Hamptons
Oct 8, 2022
Amherst, NH
Joe English Twilight Challenge
Oct 23, 2021
Adrian, MI
Heritage Trail Run
Oct 24, 2021
New London, WI
Mosquito Hill Endurance Run
Oct 15, 2022
Castle Rock, CO
Castle Rock Trail Festival
Oct 1, 2022
Green Lane, PA
Pain In Green Lane Trail Run
Oct 16, 2021
Chapel Hill, NC
Jordan Lake 12-Hour Challenge
Oct 3, 2020
Brooksville, FL
John Holmes Trail Run
Oct 9, 2021
Memphis, TN
Big Buffalo 50
Oct 23, 2021
Wildwood, MO
DeClue Loops Trail Race
Oct 22, 2022
La Crosse, WI
Hixon Trail Runs
Oct 29, 2022
Oct 30, 2022
North Augusta, SC
FATS 50K
Oct 2, 2022
Wilsonville, OR
ORRC Autumn Leaves Run
Oct 30, 2021
Corona, CA
Twin Peaks 50
Oct 17, 2020
San Francisco, CA
Pinkathon Challenge for Breast Cancer
Oct 23, 2021
Ruth Anderson Memorial Endurance Run
Oct 8, 2022
Black River Falls, WI
Black River Trail Classic
Oct 23, 2021
Oakridge, OR
Willamette Headwaters Endurance Event
Oct 3, 2020
Oklahoma City, OK
24 The Hard Way Run
Oct 16, 2021
Draper Immortal
Oct 24, 2021
Cumberland, RI
Survival of the F.I.T.test 24 Hour Trail Ultra
Oct 23, 2021
Columbia, MO
Rock Bridge Revenge
Oct 8, 2022
Albion, IN
Indiana Trail 100
Oct 8, 2022
Newport News, VA
Noland Trail 50K
Oct 17, 2021
Reidsville, NC
Lost Runners 24
Oct 17, 2020
San Diego, CA
Lake Hodges Trail Fest
Oct 23, 2021
Windham, NY
Catskills P2B Relay
Oct 16, 2022
Cassoday, KS
Heartland
Oct 9, 2021
Oct 8, 2021
Sturgeon Bay, WI
Fall 50 - Door County
Oct 22, 2022
Chicago, IL
Chicago Lakefront 50K/50M
Oct 30, 2021
Belmont, OH
The Barkcamp Race
Oct 1, 2022
Greenville, SC
Swamp Rabbit Urban Ultra 50K
Oct 3, 2020
Millburn, NJ
Mayapple Trail Run
Oct 16, 2021
Lexington, KY
Bourbon Chase
Oct 15, 2021
Brainard, NE
Bohemian Alps 50K
Oct 9, 2021
Des Moines, IA
Equalizer Endurance Run
Oct 30, 2021
Mountainside, NJ
Squatchung Surprise
Oct 2, 2021
New Gloucester, ME
Royal River Relay
Oct 17, 2020
Kalamazoo, MI
Kal-Haven Trail Run
Oct 30, 2021
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 30, 2021
Gills Rock, WI
Fall 50 - Door County
Oct 22, 2022
Titusville, PA
Oil Creek 100 Trail Runs
Oct 16, 2021
Vernon Hills, IL
Des Plaines River Trail Races
Oct 15, 2022
Council Bluffs, IA
Yippee-Ki-Yay 50K
Oct 23, 2021
Simi Valley, CA
Rocky Peak Ultra Trail Race
Oct 8, 2022
Trinidad, CO
The Rad Dirt Fest
Oct 3, 2021
Whitefish, MT
Whitefish Trail Legacy Run
Oct 3, 2021
Oct 2, 2021
Wolf Creek, MT
Wolf Creek Canyon Relay
Oct 3, 2021
Tahlequah, OK
Pumpkin Holler Hunnerd
Oct 15, 2022
Gunnison, CO
Sage Burner Trail Run
Oct 16, 2021
Circleville, WV
West Virginia Trilogy
Oct 7, 2022
Oct 8, 2022
Oct 9, 2022
Steelville, MO
Ozark Trail 100 Mile Endurance Run
Oct 29, 2022
Augusta, NJ
NJ Trail Series One Day
Oct 6, 2022
Oct 7, 2022
Granbury, TX
Dallas Spartan Trail
Oct 24, 2021
Blue Ridge, GA
Blue Ridge Ultra
Oct 8, 2022
Hood River, OR
Gorgeous Hood to Hood Relay
Oct 8, 2022
Faust, UT
Pony Express Trail 100
Oct 14, 2022
Laurel, DE
Trap Pond 50K
Oct 4, 2020
Savage, MN
Surf The Murph
Oct 22, 2022
Pilot Mountain, NC
Pilot Mountain to Hanging Rock Ultra & Relay
Oct 1, 2022
Kaysville, UT
DC Peaks 50
Oct 1, 2022
Hermitage, TN
Long Hunter Trail Runs
Oct 9, 2021
Powhatan, VA
Piedmont 8 Hour
Oct 23, 2021
Brunswick, MD
River's Edge Endurance Challenge
Oct 23, 2021
Blairsville, GA
Lady of the Lake
Oct 1, 2022
Ringgold, GA
General 100
Oct 16, 2021
Port Allen, LA
Children of the Cane
Oct 29, 2022
Burns, TN
Mo' Bell
Oct 8, 2022
Oct 9, 2022
East Memphis, TN
Haiti Medical Missions 24 Hour Tour d'Esprit
Oct 11, 2019
Port St Joe, FL
50 For Florida
Oct 21, 2022
Flowood, MS
Cemetery Hill 50K 10M
Oct 2, 2021
Palm Coast, FL
Jacks Trail Race
Oct 23, 2022
Alabaster, AL
Endless Mile
Oct 22, 2021
Oct 23, 2021
Wellsboro, PA
Green Monster Trail Challenge
Oct 9, 2022
Richfield, OH
Crowell Hilaka Trail Run
Oct 17, 2021
Canton, MS
Way's Bluff
Oct 10, 2020
Harker Heights, TX
Dana Peak Trail Run
Oct 2, 2021
Clermont, KY
Bourbon Chase
Oct 15, 2021
Ashford, CT
NipMuck Trail Marathon
Oct 2, 2022
Alpine, TX
Trans-Pecos Ultra
Oct 17, 2021
Middleville, MI
Yankee Springs Fall Festival
Oct 8, 2022
Tillamook, OR
Elk-Kings Trail Races
Oct 2, 2021
Alachua, FL
Gate2Gate Trail Run
Oct 23, 2021
Garrison, NY
Castle to River Run
Oct 30, 2021
Los Olivos, CA
Back on the Ranch
Oct 2, 2021
Amherst, NY
Buffalo Runners 6 Hour Classic
Oct 11, 2020
Pisgah Forest, NC
Pisgah 55.5K Running Race
Oct 23, 2021
Prineville, OR
HTC High Desert
Oct 1, 2022
Gold Beach, OR
Secret Beach 100K/50M
Oct 2, 2021
Moncks Corner, SC
Revenge of the Stede Bonnet
Oct 9, 2021
Bradford, VT
Devil's Den Ultra
Oct 9, 2021
Farmersville, TX
Oktoberfest Trail Run Festival
Oct 8, 2022
Lillington, NC
Cape Fear 24H Endurance Run
Oct 8, 2022
Priest Lake, ID
Priest Lake Marathon and 50K
Oct 1, 2022
Palo Duro Canyon State Park, TX
Palo Duro Trail Run
Oct 23, 2021
Kansasville, WI
Wolf Pack Trail Run & Relay
Oct 8, 2022
Borden, IN
Knobstone Knockout
Oct 17, 2021
Sebastopol, CA
Gravenstein 8 Hour
Oct 30, 2021
Dugway, UT
Dugway Trail and Ultra Run
Oct 2, 2021
Mokuleia, HI
Peacock Challenge
Oct 17, 2020
Kyburz, CA
Lover's Leap of Faith
Oct 2, 2021
Mayfield, OH
Conquer the Castle
Oct 2, 2021
Jamestown, TN
No Business 100
Oct 14, 2022
Cornwall, CT
Mohawk Mountain Race
Oct 16, 2021
Sedalia, CO
Indian Creek Fifties
Oct 15, 2022
Norton, VA
Cloudsplitter 100
Oct 15, 2022
Yachats, OR
Oregon Coast
Oct 10, 2021
Oct 9, 2021
La Crosse, VA
Thoroughbred Races
Oct 2, 2021
Hewitt, NJ
Ragnar Trail Wawayanda Lake
Oct 2, 2021
Beatty, NV
Beatty's Backyard Ultra
Oct 15, 2022
Forest, VA
Empower Off Road Challenge
Oct 23, 2021
Peosta, IA
Swiss Valley Trail Races
Oct 2, 2021
Polebridge, MT
Le Grizz Ultramarathon
Oct 9, 2021
Hanalei, HI
EPIC5 Ultra Run Challenge
Oct 22, 2021
Arrington, VA
Virginia Spartan Trail
Oct 31, 2021
Pocahontas, TN
Walking Tall 50K/25K
Oct 15, 2022
Mill Spring, NC
Wine & Dine 3 - 6 - 9 Hour Ultra
Oct 29, 2022
Pamplin, VA
High Bridge Ultra 50K
Oct 9, 2021
Waterville, PA
Wilds Mountain Fest
Oct 23, 2022
Sultan, WA
Osprey Ambler
Oct 1, 2022
Grapeland, TX
Mission Tejas Trail Run
Oct 22, 2022
Canton, SD
Glacier Hills Ultra
Oct 23, 2021
Navajo Mountain, UT
Naatsisaan Trail Ultra
Oct 30, 2021
Mammoth Cave, KY
Mammoth Cave 50K 25K
Oct 23, 2021
Upper Black Eddy, PA
Muleskinner
Oct 16, 2021
North Bend, PA
Black Forest Ultra 100K
Oct 2, 2022
Vesuvius, VA
Monte Vino Races - 12 Ridges Vineyard
Oct 23, 2021
Westfir, OR
Westfir 50k
Oct 24, 2021
Glenbeulah, WI
Reaper
Oct 30, 2021
La Honda, CA
Vista Verde Skyline Run
Oct 23, 2021
Los Osos, CA
Spooner's Cove
Oct 16, 2022
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| Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
City Location
1. Castle Rock Trail Festival
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Oct 1, 2022Saturday
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50K, 13.1M, 10K, 5K trail run
More Information
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Castle Rock, CO
Douglas County, CO
2. DC Peaks 50
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Oct 1, 2022Saturday
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50M trail run
More Information
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Kaysville, UT
Davis County, UT
3. Dirt Circuit
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Oct 1, 2022Saturday
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24H, 12H trail run | 24H, 12H relay
More Information
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Morristown, TN
Hamblen County, TN
4. Hennepin Hundred
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Oct 1, 2022Saturday
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100M, 50M, 50K trail run
More Information
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Sterling, IL
Whiteside County, IL
5. HTC High Desert
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Oct 1, 2022Saturday
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71M relay
More Information
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Prineville, OR
Crook County, OR
6. Lady of the Lake
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Oct 1, 2022Saturday
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8H trail run
More Information
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Blairsville, GA
Union County, GA
7. Osprey Ambler
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Oct 1, 2022Saturday
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6H, 2H trail run
More Information
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Sultan, WA
Snohomish County, WA
8. Pilot Mountain to Hanging Rock Ultra & Relay
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Oct 1, 2022Saturday
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50M, 50K trail run | 50M relay
Virtual OptionMore Information
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startPilot Mountain, NCfinishDanbury, NCSurry County, NCStokes County, NC
9. Priest Lake Marathon and 50K
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Oct 1, 2022Saturday
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50K, 26.2M, 13.1M, 6.6M, 5K run | 26.2M relay
More Information
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Priest Lake, ID
Bonner County, ID
10. The Barkcamp Race
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Oct 1, 2022Saturday
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13.1M, 10K, 5K run | 40M, 26.2M, 13.1M trail run
More Information
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Belmont, OH
Belmont County, OH
11. Arkansas Traveller 100
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Past DateOct 2, 2021Saturday
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100M trail run
More Information
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Perryville, AR
Perry County, AR
12. Back on the Ranch
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Past DateOct 2, 2021Saturday
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24H, 12H, 6H run
More Information
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Los Olivos, CA
Santa Barbara County, CA
13. Baker Lake 50K
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Past DateOct 2, 2021Saturday
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50K trail run
More Information
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Woodinville, WA
King County, WA
14. Bear Creek Endurance Run
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Past DateOct 2, 2021Saturday
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12H trail run
More Information
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Colorado Springs, CO
El Paso County, CO
15. Black Forest Ultra 100K
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Oct 2, 2022Sunday
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100K trail run
More Information
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North Bend, PA
Clinton County, PA
16. Bulldog Trail Runs
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Past DateOct 2, 2021Saturday
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50K, 25K trail run
More Information
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Calabasas, CA
Los Angeles County, CA
17. Cemetery Hill 50K 10M
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Past DateOct 2, 2021Saturday
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50K, 10M run
More Information
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Flowood, MS
Rankin County, MS
18. Conquer the Castle
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Past DateOct 2, 2021Saturday
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100K, 50K, 20M, 10M, 5K run
More Information
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Mayfield, OH
Cuyahoga County, OH
19. Crested Butte Ultra
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Past DateOct 2, 2021Saturday
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105K, 55K trail run
More Information
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Crested Butte, CO
Gunnison County, CO
20. Dana Peak Trail Run
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Past DateOct 2, 2021Saturday
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50K, 20K, 10K trail run
More Information
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Harker Heights, TX
Bell County, TX
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.