May Ultras in the USA
Blacksburg, VA
Gateway 50K & 25K
May 2, 2020
Sausalito, CA
San Francisco 50 Miler
May 16, 2020
Nashville, IN
Dances With Dirt - Gnaw Bone, IN
May 22, 2021
Portland, OR
Stumptown Trail Runs
May 30, 2022
May 28, 2022
Potosi, MO
Berryman Marathon & 50 Miler
May 15, 2021
Oak Ridge, TN
Run Under The Stars
May 15, 2021
Locust Grove, GA
Sunshine Endurance 6 and 12H Run
May 8, 2021
Flagstaff, AZ
Cocodona 250
May 2, 2022
Fountain Hills, AZ
Adrenaline Night Runs
May 22, 2021
Bainbridge Island, WA
Battle Point Endurance Run
May 2, 2020
Fremont, CA
Ohlone 50K Trail Run
May 15, 2022
Bellingham, WA
Lost Lake 50K
May 2, 2020
Ski to Sea
May 29, 2022
Plainview, NY
Greenbelt Trail 50K
May 8, 2021
Bastrop, TX
Wildflower Trail Runs
May 8, 2021
May 9, 2021
Pawling, NY
Summer Warm Up Run
May 2, 2021
Lutsen, MN
Superior Spring Trail Races
May 21, 2022
Athens, OH
Thunderbunny 50K
May 8, 2021
May 7, 2021
Ft. Valley, VA
Massanutten Mountain Trails 100 Mile Run
May 14, 2022
Berkeley, CA
Grizzly Peak
May 14, 2022
Colorado Springs, CO
Cheyenne Mountain Ultra 10x5K
May 2, 2020
Valkyrie Trail Race
May 14, 2022
Fairmont, WV
EHQ Valley Falls 6 & 12 Hour
May 7, 2022
Greenland, CO
Greenland Trail Races
May 7, 2022
York, ME
Big A 50K
May 7, 2022
San Jose, CA
Hacienda Hills Run
May 7, 2022
Philadelphia, PA
Dirty German Endurance Fest
May 7, 2022
Terre Haute, IN
Hawthorn Half Day Relay & Ultra
May 28, 2022
Issaquah, WA
Tiger Mountain Trail Run
May 15, 2021
Park City, UT
Running with Ed
May 21, 2022
Guntersville, AL
Sweet Southern Discomfort - Alabama
May 25, 2020
Anderson, SC
Bell Lap Endurance Run
May 14, 2022
Stinson Beach, CA
Miwok 100K
May 7, 2022
Pacifica, CA
Devils Slide Trail Run
May 22, 2021
Buena Vista, CO
Collegiate Peaks Trail Run
May 1, 2021
Los Gatos, CA
Big Basin - Skyline to the Sea
May 31, 2020
Laramie, WY
Wyoming Marathon Races
May 30, 2021
Key West, FL
KEYS100
May 21, 2022
Madison, WI
Ragnar Great Midwest
May 15, 2020
Waukegan, IL
Ragnar Great Midwest
May 15, 2020
Huntington, WV
Salamander State Marathon
May 31, 2021
Columbia, SC
Firebreak Trail Series
May 14, 2022
Bishop, CA
Bishop High Sierra Ultras
May 22, 2021
Dousman, WI
Bunk House Trail Runs
May 28, 2022
Winder, GA
Fort Yargo Ultra
May 28, 2022
Fabius, NY
Highland Forest 1-2-3 Trail Run
May 30, 2020
Cleveland Heights, OH
The Forgotten
May 30, 2020
Winthrop, WA
Sun Mountain
May 22, 2021
May 23, 2021
Thurmond, WV
Highball to Thurmond Ultra
May 22, 2022
Galena, IL
Galena Sky Trail Race
May 15, 2021
Jackson, MI
Cascades 1 x 100M Challenge
May 1, 2021
Paso Robles, CA
Silver Moon Race
May 14, 2022
Kirtland, OH
Outrun 24 Hour Trail Race
May 8, 2021
Fall River, MA
Watuppa Trail Races
May 15, 2022
Charleston, WV
Middle Ridge Monster 8H Run
May 8, 2021
Lone Pine, CA
Wild Wild West Marathon
May 1, 2021
La Grange, WI
Ice Age Trail Run
May 14, 2022
Delaware, OH
Playin' Possum 50K
May 23, 2020
Pollock Pines, CA
Trail Run at Sly Park
May 14, 2022
Black Mountain, NC
Black Mountain Monster
May 28, 2022
Clayton, CA
Mt Diablo Trail Run
May 16, 2020
Guerneville, CA
Armstrong Redwoods Trail Run
May 1, 2021
Brandenburg, KY
Ragnar Trail Kentuckiana
May 21, 2021
Palo Alto, CA
Horseshoe Lake
May 1, 2022
Chelsea, MI
Island Time
May 7, 2021
May 8, 2021
San Diego, CA
PCT 50
May 14, 2022
Los Alamos, NM
Jemez Mountain Trail Runs
May 22, 2021
Des Moines, IA
Market to Market Relay - Iowa
May 14, 2022
Wartrace, TN
Strolling Jim Run
May 7, 2022
Ludington, MI
Veterans Memorial 150
May 28, 2022
New Gloucester, ME
Trail Festival at Pineland Farms
May 29, 2021
May 30, 2021
Ithaca, NY
Cayuga Trails 50
May 29, 2021
Morgantown, WV
Downhill Dirt 50K
May 8, 2021
Trabuco Canyon, CA
Baldy Marathons
May 9, 2020
Faribault, MN
Maple Syrup Fun Run
May 7, 2022
Pelham, AL
Run for Kids Challenge
May 1, 2021
Terrebonne, OR
Smith Rock Ascent
May 14, 2022
May 15, 2022
Portersville, PA
Glacier Ridge Trail Ultra
May 15, 2021
Wendover, UT
Salt Flats Endurance Runs
May 6, 2022
May 7, 2022
New Auburn, WI
Chippewa 50K
May 15, 2021
Butte, MT
Divide 50 & 25K
May 21, 2022
Graford, TX
Possums Revenge
May 21, 2022
North Wales, PA
Yellow Stairway 6K/12K
May 7, 2022
Pine, AZ
Pine Trail Run
May 7, 2022
Blue Ridge, GA
Cruel Jewel 100
May 13, 2022
Cruel Jewel 50
May 14, 2022
Dover, OH
Running With My Gnomies
May 15, 2021
Susanville, CA
Paiute Meadows Trail Run
May 14, 2022
Boiling Springs, PA
Bubbletown What The Duck Ultra
May 29, 2021
Palmer Lake, CO
24 Hours of Palmer Lake
May 14, 2022
Ashburnham, MA
Wapack and Back Trail Races
May 9, 2020
Calhoun, GA
Sweet Southern Discomfort - Georgia
May 23, 2020
South Lebanon, OH
Word Incarnate Running Festival
May 20, 2022
May 21, 2022
West Fork, AR
RAPTOR Adventure Series
May 1, 2021
Wellsboro, PA
Hills Creek Endurance Challenge
May 7, 2022
Richfield, OH
HIgh Lea 6/12/24
May 21, 2022
East Ridge, TN
Sweet Southern Discomfort - Tennessee
May 24, 2020
Locomotion Endurance 6/12/24
May 14, 2022
Seaside, OR
100K Relay on the Prom
May 14, 2021
Rush City, MN
Growing Green Challenge
May 29, 2021
May 30, 2021
Burnsville, NC
Quest For The Crest Trail Races
May 21, 2022
Blue Diamond, NV
Red Rock Canyon
May 8, 2021
Eldridge, IA
Corn Belt Running Club 24 Hour Run
May 15, 2021
Cordesville, SC
Wambaw Swamp Stomp
May 7, 2022
Black Canyon City, AZ
Cocodona 250
May 2, 2022
Trail, OR
Lost Creek Trail Runs
May 2, 2020
Franktown, CO
Castlewood Canyon Endurance Run
May 22, 2021
Penfield, PA
Quehanna 50
May 2, 2020
Mt. Carmel, UT
Ragnar Trail Relay - Zion
May 14, 2021
Jefferson, IA
Market to Market Relay - Iowa
May 14, 2022
Rochelle Park, NJ
Saddle Up Spring Challenge
May 8, 2021
Blodgett, OR
Marys Peak Trail Run
May 14, 2022
Sharon Hill, PA
Dawn to Dusk to Dawn Ultras
May 7, 2022
Lolo, MT
Hootenanny 50K
May 23, 2021
Rockwood, TN
Ozone Endurance Challenge
May 26, 2021
Stearns, KY
Yamacraw Trail Runs
May 22, 2021
May 23, 2021
Mouth of Wilson, VA
Grayson Highlands
May 8, 2022
May 7, 2022
Pawhuska, OK
Flower Moon
May 15, 2021
Miami, AZ
Pinal Peak
May 29, 2021
Divide, CO
Endure 12 and 24 Hour
May 14, 2022
Strawn, TX
Hidden Hills Ultra
May 21, 2022
Rixeyville, VA
5 Hours of Verdun Cross Country Relay Race
May 8, 2021
Fort Collins, CO
Quad Rock 50
May 8, 2021
Fort Mill, SC
4 X 4 X 48 Challenge
May 7, 2021
Elkhart, KS
Okie Relays
May 16, 2020
Globe, AZ
Pinal Peak
May 29, 2021
Hatch, UT
Bryce Canyon Ultras
May 28, 2022
Proctorville, OH
Bobcat Marathon
May 30, 2021
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| Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
City Location
1. Armstrong Redwoods Trail Run
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CancelledMay 1, 2021Saturday
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50K, 30K, 17K, 9K, 5K trail run
More Information
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Guerneville, CA
Sonoma County, CA
2. Cascades 1 x 100M Challenge
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Past DateMay 1, 2021Saturday
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100M, 1M run
More Information
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Jackson, MI
Jackson County, MI
3. Collegiate Peaks Trail Run
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Past DateMay 1, 2021Saturday
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50M, 25M trail run
More Information
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Buena Vista, CO
Chaffee County, CO
4. Horseshoe Lake
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May 1, 2022Sunday
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50K, 26.2M, 13.1M, 5M trail run
More Information
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Palo Alto, CA
Santa Clara County, CA
5. RAPTOR Adventure Series
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Past DateMay 1, 2021Saturday
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50K, 25K, 10K trail run
More Information
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West Fork, AR
Washington County, AR
6. Run for Kids Challenge
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Past DateMay 1, 2021Saturday
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12H, 50K, 10K trail run
More Information
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Pelham, AL
Shelby County, AL
7. Wild Wild West Marathon
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Past DateMay 1, 2021Saturday
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50M, 50K, 26.2M, 10M trail run
Virtual OptionMore Information
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Lone Pine, CA
Inyo County, CA
8. Battle Point Endurance Run
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CancelledMay 2, 2020Saturday
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12H, 10H, 8H, 6H, 4H, 2H run
More Information
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Bainbridge Island, WA
Kitsap County, WA
9. Cheyenne Mountain Ultra 10x5K
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CancelledMay 2, 2020Saturday
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50K, 5K run | 50K, 5K trail run | 50K relay
More Information
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Colorado Springs, CO
El Paso County, CO
10. Cocodona 250
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May 2, 2022Monday
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250M trail run
More Information
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startBlack Canyon City, AZfinishFlagstaff, AZCoconino County, AZYavapai County, AZ
11. Gateway 50K & 25K
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CancelledMay 2, 2020Saturday
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50K, 25K trail run
More Information
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Blacksburg, VA
Montgomery County, VA
12. Lost Creek Trail Runs
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CancelledMay 2, 2020Saturday
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50K, 30K, 5K trail run | 30K relay
More Information
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Trail, OR
Jackson County, OR
13. Lost Lake 50K
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CancelledMay 2, 2020Saturday
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50K, 25K trail run
More Information
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Bellingham, WA
Whatcom County, WA
14. Palm Bluff Trail Race and Ultra Marathon
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Past DateMay 2, 2021Sunday
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50K, 13.1M, 12K trail run
More Information
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Osteen, FL
Volusia County, FL
15. Quehanna 50
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Past DateMay 2, 2020Saturday
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50M trail run
More Information
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Penfield, PA
Clearfield County, PA
16. Summer Warm Up Run
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Past DateMay 2, 2021Sunday
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50K, 40K, 30K, 20K, 15K, 10K, 5K run
More Information
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Pawling, NY
Dutchess County, NY
17. Tacoma City Marathon Weekend Running Festival
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CancelledMay 3, 2020Sunday
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50K, 26.2M, 13.1M run | 50K, 26.2M relay
More Information
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Boston Marathon Qualifier
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Tacoma, WA
Pierce County, WA
18. Peak Bloodroot Ultra
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CancelledMay 5, 2022Thursday
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500M trail run
More Information
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Pittsfield, VT
Rutland County, VT
19. Knock on Woodstock
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May 6, 2022Friday
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100M, 50M trail run
More Information
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Marietta, SC
Greenville County, SC
20. Salt Flats Endurance Runs
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May 6, 2022Friday
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100M, 50M, 50K run
More Information
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Wendover, UT
Tooele County, UT
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.