October Ultras in the USA
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Concrete, WA
Baker Lake 50K
Oct 6, 2018
Greensboro, NC
Triple Lakes Trail Race
Oct 20, 2018
Somers, CT
Scantic Valley Six
Oct 29, 2017
Titusville, NJ
Trails4Tails Fest 50K
Oct 20, 2018
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 6, 2018
Flagstaff, AZ
Flagstaff Sky Peaks Mountain Runs
Oct 6, 2018
Fountain Hills, AZ
Javelina Jundred
Oct 27, 2018
Cedar City, UT
Cedar City Thunderbird 50K
Oct 20, 2018
Washington, DC
Potomac Heritage Trail 50K
Oct 29, 2017
Deerfield Beach, FL
PALM100 Ultras
Oct 27, 2018
Waynesville, OH
Broken Toe 50K/25K
Oct 20, 2018
Franklin, NC
Naturalist - Epic 50K, 25K
Oct 6, 2018
Dayton, OH
MOX 12 Hour Endurance Run
Oct 6, 2018
Boalsburg, PA
Tussey Mountainback 50 Mile Relay and Ultra
Oct 7, 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 6, 2018
Pine Mountain, GA
Big 50
Oct 21, 2017
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
Newport, OR
Dia De Los Muertos Endurance Run
Oct 27, 2018
East Peoria, IL
Farmdale Trail Run
Oct 6, 2018
Cave Creek, AZ
Cave Creek Thriller Trail Runs
Oct 13, 2018
Raleigh, NC
Tuna Run 200
Oct 19, 2018
Canton, GA
Sleepy Hollow Hourly Ultra
Oct 13, 2018
Bandera, TX
Cactus Rose 100 Mile
Oct 27, 2018
Rocky Point, NY
Tesla Hertz Run
Oct 6, 2018
Charlotte, NC
WC-50 Ultra Trail Marathon
Oct 13, 2018
Emporium, PA
Sinnemahone Ultra Marathon 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 20, 2018
South Lake Tahoe, CA
Lake Tahoe Marathon
Oct 14, 2018
Guilford, CT
Bimblers Bluff 50K
Oct 21, 2018
Pacifica, CA
Urban Coyote Racing Pacifica Summit Run
Oct 6, 2018
Henderson, NV
Run The Canyons
Oct 19, 2018
Reading, PA
Blues Cruise 50K Trail Ultra
Oct 7, 2018
Blue Springs, MO
Blue Springs Runners 50/50
Oct 29, 2017
Canandaigua, NY
Can Lake 50 Ultra
Oct 13, 2018
Ft. Mill, SC
Ragnar Trail Carolinas
Oct 5, 2018
Moab, UT
Moab 240
Oct 12, 2018
Libertyville, IL
Des Plaines River Trail Races
Oct 13, 2018
Las Cruces, NM
Day of the Dead Marathon Series
Oct 25, 2018 - Day 1
Oct 26, 2018 - Day 2
Oct 27, 2018 - Day 3
Oct 28, 2018 - Day 4
Tacoma, WA
Defiance 50K
Oct 13, 2018
South Bend, IN
St Pats 24 Hour
Oct 20, 2018
Cincinnati, OH
Feral Hog 50K
Oct 13, 2018
Comfort, TX
Ragnar Trail Hill Country
Oct 19, 2018
Rochester Hills, MI
Thru The Leaves Ultra & Relay
Oct 6, 2018
New London, WI
Mosquito Hill Endurance Run
Oct 27, 2018
Castle Rock, CO
Castle Rock Trail Festival
Oct 6, 2018
Green Lane, PA
Creek to River Relay
Oct 28, 2018
Muir Beach, CA
Coyote Ridge
Oct 13, 2018
Brooksville, FL
John Holmes Trail Run
Oct 6, 2018
Louisville, KY
Elevate 50K
Oct 6, 2018
Memphis, TN
Bill Hill Pond Walking Tall 50K/25K
Oct 20, 2018
North Augusta, SC
FATS 50K
Oct 7, 2018
Spokane, WA
Chocolate Chip Cookie 50K Trail Run
Oct 27, 2018
Boise, ID
Foothills 50K Frenzy
Oct 6, 2018
Wilsonville, OR
ORRC Autumn Leaves Run
Oct 27, 2018
Corona, CA
Twin Peaks 50
Oct 13, 2018
Black River Falls, WI
Black River Trail Classic
Oct 20, 2018
Oakridge, OR
Willamette Headwaters Endurance Event
Oct 6, 2018
Oklahoma City, OK
24 The Hard Way Run
Oct 20, 2018
Columbia, MO
Rock Bridge Revenge
Oct 6, 2018
Albion, IN
Indiana Trail 100
Oct 13, 2018
San Antonio, TX
I Ran Flagship Marathons - Equatorial Guinea
Oct 13, 2018
I Ran Flagship Marathons - Eritrea
Oct 21, 2018
I Ran Marathons - Count Dracula
Oct 27, 2018
San Diego, CA
Lake Hodges Trail Fest
Oct 27, 2018
Chicago, IL
Chicago Lakefront 50K/50M
Oct 27, 2018
Presque Isle, PA
Presque Isle Endurance Classic
Oct 21, 2017
Lexington, KY
Bourbon Chase
Oct 12, 2018
Ellicott City, MD
Patapsco Valley 50K
Oct 27, 2018
Des Moines, IA
Equalizer Endurance Run
Oct 27, 2018
Saratoga, CA
Skyline to the Sea
Oct 6, 2018
Castro Valley, CA
Bay Ridge 100K
Oct 6, 2018
Dick Collins Firetrails 50
Oct 6, 2018
Gills Rock, WI
Fall 50 - Door County
Oct 20, 2018
Titusville, PA
Oil Creek 100 Trail Runs
Oct 6, 2018
Simi Valley, CA
Rocky Peak Ultra Trail Race
Oct 20, 2018
Wolf Creek, MT
Wolf Creek Canyon Relay
Oct 1, 2017
Tahlequah, OK
Pumpkin Holler Hunnerd
Oct 20, 2018
Gunnison, CO
Sage Burner Trail Run
Oct 27, 2018
Bailey, CO
Lactic Acid Trip
Oct 5, 2018
Circleville, WV
West Virginia Trilogy - Day 1
Oct 12, 2018
West Virginia Trilogy - Day 2
Oct 13, 2018
Apalachicola, FL
Running for the Bay! Marathon
Oct 21, 2018
Cannon Beach, OR
Gorgeous Coast Relay
Oct 6, 2018
Susanville, CA
Bizz Johnson
Oct 7, 2018
Swoope, VA
Grindstone 100
Oct 5, 2018
Fairfield, OH
Stone Steps 50K
Oct 28, 2018
Faust, UT
Pony Express Trail 100
Oct 19, 2018
Savage, MN
Surf The Murph
Oct 20, 2018
Pilot Mountain, NC
Pilot Mountain to Hanging Rock Trail Ultras
Oct 13, 2018
Powhatan, VA
Piedmont 8 Hour
Oct 27, 2018
Fries, VA
New River Trail 50K
Oct 13, 2018
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 20, 2018
Green River, UT
Goblin Valley Ultra
Oct 27, 2018
Palm Coast, FL
Jack's Trail Race
Oct 21, 2018
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 7, 2018
Canton, MS
Way's Bluff
Oct 27, 2018
Greenville, MI
Bad Apple Ultra
Oct 27, 2018
Gregory, MI
Legend of the Dogman
Oct 20, 2018
Tillamook, OR
Elk-Kings 25K/50K
Oct 13, 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
Farmersville, TX
Oktoberfest Trail Run Festival
Oct 20, 2018
Vinton, IA
Doggone Tired Ultra
Oct 27, 2018
Brookline, NH
Ghost Train Rail Trail Races - Ultra Race
Oct 21, 2018
Palo Duro Canyon State Park, TX
Palo Duro Trail Run
Oct 20, 2018
Ririe, ID
Gnarly Bear Endurance Run
Oct 13, 2018
Dugway, UT
Dugway Trail and Ultra Run
Oct 13, 2018
Mokuleia, HI
Peacock Challenge
Oct 20, 2018
Elkhorn City, KY
Cloudsplitter 100
Oct 13, 2018
Lolo, MT
Hootenanny 100K
Oct 8, 2018
Sedalia, CO
Indian Creek Fifties
Oct 13, 2018
Yachats, OR
Oregon Coast 50K
Oct 13, 2018
Pinson, TN
Dream Chaser
Oct 6, 2018
Hewitt, NJ
Ragnar Trail Wawayanda Lake
Oct 5, 2018
Polebridge, MT
Le Grizz Ultramarathon
Oct 13, 2018
Pocahontas, TN
Walking Tall 50/25K
Oct 20, 2018
Mount Perry, OH
Rucktoberfest Relays
Oct 27, 2018
Fort Wayne, IN
Run Wild 24 Hour Trail Run
Oct 28, 2017
Pamplin, VA
High Bridge Ultra 50K
Oct 13, 2018
Grapeland, TX
Mission Tejas Trail Run
Oct 27, 2018
Osawatomie, KS
Rush the Rails
Oct 6, 2018
Rosharon, TX
Skydive Ultra Texas
Oct 27, 2018
Tonalea, AZ
Naatsisaan Trail Ultra
Oct 27, 2018
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City Location
1. Wolf Creek Canyon Relay
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Past DateOct 1, 2017Sunday
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28M relay
Race Link
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Wolf Creek, MT
Lewis and Clark County, MT
2. Grindstone 100
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Oct 5, 2018Friday
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100M run
Race Link
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Swoope, VA
Augusta County, VA
3. Haiti Medical Missions 24 Hour Tour d'Esprit
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Oct 5, 2018Friday
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24H run
Race Link
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East Memphis, TN
Shelby County, TN
4. Lactic Acid Trip
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Oct 5, 2018Friday
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48H, 24H, 100M, 12H, 100K, 50M, 50K, 26.2M run
Race Link
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Bailey, CO
Park County, CO
5. Ragnar Trail Carolinas
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Oct 5, 2018Friday
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125M relay
Race Link
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Ft. Mill, SC
York County, SC
6. Ragnar Trail Wawayanda Lake
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Oct 5, 2018Friday
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120M relay
Race Link
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Hewitt, NJ
Passaic County, NJ
7. Arkansas Traveller 100
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Oct 6, 2018Saturday
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100M trail run
Race Link
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Perryville, AR
Perry County, AR
8. Baker Lake 50K
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Oct 6, 2018Saturday
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50K trail run
Race Link
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Concrete, WA
Skagit County, WA
9. Bay Ridge 100K
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Oct 6, 2018Saturday
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100K trail run
Race Link
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Castro Valley, CA
Alameda County, CA
10. Castle Rock Trail Festival
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Oct 6, 2018Saturday
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50K, 26.2M, 13.1M, 10K, 5K trail run
Race Link
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Castle Rock, CO
Douglas County, CO
11. Children of the Cane
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Oct 6, 2018Saturday
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100M, 100K, 50K run
Race Link
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Port Allen, LA
West Baton Rouge County, LA
12. Columbus Day Relay
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Oct 6, 2018Saturday
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60M relay
Race Link
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Columbus, GA
Muscogee County, GA
13. Dick Collins Firetrails 50
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Oct 6, 2018Saturday
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50M run
Race Link
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Castro Valley, CA
Alameda County, CA
14. Dream Chaser
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Oct 6, 2018Saturday
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100M, 100K, 50M, 50K, 26.2M, 13.1M, 10K, 5K, 1M run
Race Link
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Pinson, TN
Madison County, TN
15. Elevate 50K
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Oct 6, 2018Saturday
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50K, 5K run | kids run
Race Link
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Louisville, KY
Jefferson County, KY
16. Farmdale Trail Run
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Oct 6, 2018Saturday
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50M, 30M, 10M trail run
Race Link
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East Peoria, IL
Tazewell County, IL
17. Flagstaff Sky Peaks Mountain Runs
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Oct 6, 2018Saturday
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55K, 39K, 3K trail run
Race Link
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Flagstaff, AZ
Coconino County, AZ
18. Foothills 50K Frenzy
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Oct 6, 2018Saturday
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50K trail run
Race Link
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Boise, ID
Ada County, ID
19. General 100
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Oct 6, 2018Saturday
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100M relay
Race Link
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Kennesaw, GA
Cobb County, GA