May Ultras in the USA
Blacksburg, VA
Gateway 50K & 25K
May 4, 2019
Bear Mountain, NY
North Face Endurance Challenge
May 4, 2019
Sausalito, CA
San Francisco 50 Miler
May 18, 2019
Nashville, IN
Dances With Dirt - Gnaw Bone, IN
May 18, 2019
Portland, OR
Stumptown Trail Runs
May 25, 2020
Potosi, MO
Berryman Marathon & 50 Miler
May 18, 2019
Oak Ridge, TN
Run Under The Stars - Oak Ridge, TN
May 18, 2019
Medford, OR
Climate Run Rogue River
May 10, 2019
Fountain Hills, AZ
Adrenaline Night Runs
May 18, 2019
Bainbridge Island, WA
Battle Point Endurance Run
May 4, 2019
Uxbridge, MA
durtyfeets Trail Series - Goat Hill
May 18, 2019
Fremont, CA
Ohlone 50K Trail Run
May 17, 2020
Bellingham, WA
Lost Lake 50K
May 4, 2019
Ski to Sea
May 24, 2020
Plainview, NY
Greenbelt Trail 50K
May 11, 2019
Bastrop, TX
Wildflower Trail Run
May 9, 2020
Rochester, NY
Mind The Ducks 12 Hour
May 9, 2020
Thonotosassa, FL
May The 4th Be With You Races
May 2, 2020
New Paltz, NY
Rock The Ridge
May 2, 2020
Athens, OH
Thunderbunny 50K
May 11, 2019
Ft. Valley, VA
Massanutten Mountain Trails 100 Mile Run
May 18, 2019
Colorado Springs, CO
Cheyenne Mountain Ultra 10x5k
May 2, 2020
Greenland, CO
Greenland Trail Races
May 2, 2020
York, ME
Big A 50K
May 4, 2019
San Jose, CA
Quicksilver Endurance Runs
May 11, 2019
Philadelphia, PA
Dirty German
May 9, 2020
Terre Haute, IN
Hawthorn Half Day Relay & Ultra
May 16, 2020
Canton, GA
Go Bananas
May 18, 2019
Charlotte, NC
Time Laps 24 Hour Relay Race
May 8, 2020
Park City, UT
Running with Ed
May 16, 2020
Guntersville, AL
Sweet Southern Discomfort - Alabama
May 27, 2019
Stinson Beach, CA
Miwok 100K
May 2, 2020
Buena Vista, CO
Collegiate Peaks Trail Run
May 4, 2019
Pittsfield, VT
Peak Bloodroot Ultra - 100M
May 10, 2019
Peak Bloodroot Ultra - 50M, 30M, 15M
May 11, 2019
Charlottesville, VA
UROC 100K, Uber Rock 50K & Cruxy 25K
May 2, 2020
Willoughby Hills, OH
CLE Trail Challenge
May 11, 2019
Plymouth, MA
Ragnar Cape Cod Relay
May 10, 2019
Laramie, WY
Wyoming Marathon Races
May 26, 2019
Key West, FL
KEYS100
May 16, 2020
Munising, MI
Rock River Canyon 50K
May 26, 2019
Brooksville, FL
Anti-Hero Championship Trail Races
May 25, 2019
Dousman, WI
Bunk House Trail Runs
May 25, 2019
Reno, NV
Silver State 50-mile and 50K Endurance Runs
May 18, 2019
Battle Born Trail Series - Multi-Hour Event
May 25, 2019
Reno-Tahoe Odyssey Relay Run Adventure
May 29, 2020
Capital Odyssey Relay
May 30, 2020
Comstock Odyssey Relay
May 30, 2020
Galena, IL
Galena Sky Trail Races
May 16, 2020
Kirtland, OH
Outrun 24 Hour Trail Race
May 2, 2020
Fall River, MA
Watuppa Trail Races
May 19, 2019
Corvallis, OR
McDonald Forest 50K Trail Run
May 4, 2019
Lone Pine, CA
Wild Wild West Marathon & Ultras
May 4, 2019
New Orleans, LA
Crawfish Relay
May 3, 2019
La Grange, WI
Ice Age Trail Run
May 11, 2019
Delaware, OH
Playin' Possum 50K
May 18, 2019
Pollock Pines, CA
Trail Run at Sly Park Lake
May 11, 2019
Clayton, CA
Mt Diablo Trail Run
May 18, 2019
Guerneville, CA
Armstrong Redwoods Trail Run
May 4, 2019
Brandenburg, KY
Ragnar Trail Kentuckiana
May 17, 2019
Palo Alto, CA
Horseshoe Lake
May 5, 2019
Carson City, NV
Capital Odyssey Relay
May 30, 2020
San Diego, CA
PCT 50
May 16, 2020
Chicago, IL
Ragnar Great Midwest
May 17, 2019
Los Alamos, NM
Jemez Mountain Trail Runs
May 23, 2020
Millburn, NJ
Mayapple Trail Run
May 11, 2019
Des Moines, IA
Market to Market Relay - Iowa
May 9, 2020
Wartrace, TN
Strolling Jim Run
May 2, 2020
Pocatello, ID
Scout Mountain Ultra Trail
May 31, 2019
Ludington, MI
Veterans Memorial 150
May 23, 2020
Oakland, CA
Cinderella
May 11, 2019
New Gloucester, ME
Pineland Farms Trail Running Festival - Day Two
May 24, 2020
Trabuco Canyon, CA
Baldy Marathons
May 18, 2019
Faribault, MN
Maple Syrup Fun Run
May 4, 2019
Pelham, AL
Run for Kids Challenge
May 9, 2020
Yellow Springs, OH
Tie Dye 50K
May 18, 2019
Terrebonne, OR
Smith Rock Ascent
May 16, 2020
Portersville, PA
Glacier Ridge Trail Ultra
May 11, 2019
Wendover, UT
Salt Flats Endurance Runs
May 1, 2020
Hull, MA
Ragnar Cape Cod
May 10, 2019
North Berwick, ME
Balata Capacity Relay
May 4, 2019
Graford, TX
Possum's Revenge
May 25, 2019
Augusta, NJ
3 Days at the Fair - 144 Hour race plus Marathon and 50K
May 11, 2020
3 Days at the Fair - 72 Hour race plus Marathon and 50K
May 14, 2020
3 Days at the Fair - 48 Hour race plus Marathon and 50K
May 15, 2020
3 Days at the Fair - 24, 12 & 6 Hour races plus 50K and Marathon
May 16, 2020
Black Hawk, CO
Dirty 30 Trail Run
May 30, 2020
Blue Ridge, GA
Cruel Jewel 100M
May 15, 2020
Cruel Jewel 50M
May 16, 2020
Susanville, CA
Paiute Meadows Trail Run
May 11, 2019
Valentine, NE
Cowboy Ultra
May 11, 2019
Bellevue, WA
Lake Hills 50K Relay
May 5, 2019
Buckeye, AZ
Hotfoot Hamster
May 4, 2019
Lithia Springs, GA
SweetH2O 50K
May 11, 2019
Ashburnham, MA
Wapack and Back Trail Races
May 11, 2019
Calhoun, GA
Sweet Southern Discomfort - Georgia
May 25, 2019
Waxahachie, TX
Hachie 50
May 1, 2020
Rush City, MN
Growing Green Challenge - Day 2
May 26, 2019
Burnsville, NC
Quest For The Crest Trail Races
May 16, 2020
St. Francisville, LA
Beast For A Day
May 11, 2019
Eldridge, IA
Corn Belt Running Club 24 Hour Run
May 4, 2019
Los Olivos, CA
Born To Run Ultra Marathons
May 15, 2019
Born To Run Ultra Marathon Extravaganza
May 17, 2019
Born To Run Ultra Marathons
May 18, 2019
Leonard, MI
Twilight Zone 24 Hour Endurance Run
May 2, 2020
Pisgah Forest, NC
Pisgah 55.5K Running Race
May 16, 2020
Cordesville, SC
Wambaw Swamp Stomp
May 2, 2020
Prineville, OR
Ochoco Trail Runs
May 24, 2020
Trail, OR
Lost Creek Trail Runs
May 2, 2020
Tygh Valley, OR
Tygh Valley Infinity Ultra - Last Man Standing
May 4, 2019
Moreland, GA
Darkside 8 Hour Run
May 4, 2019
Priest Lake, ID
Priest Lake Marathon
May 11, 2019
Mt. Carmel, UT
Ragnar Trail Relay - Zion
May 10, 2019
Sharon Hill, PA
Dawn to Dusk to Dawn Ultras
May 11, 2019
Bethera, SC
Hell Hole Hundred
May 30, 2020
Booneville, IA
Booneville Backroads Ultra
May 25, 2019
Olga, WA
Orcas Island 50M
May 11, 2019
Mouth of Wilson, VA
Grayson Highlands 50K
May 2, 2020
Strawn, TX
Hidden Hills Ultra
May 16, 2020
Forksville, PA
Worlds End Ultramarathon
May 30, 2020
Fort Collins, CO
Quad Rock 50
May 9, 2020
Elkhart, KS
Okie Relays
May 18, 2019
Hatch, UT
Bryce Canyon Ultras
May 30, 2020
Proctorville, OH
Bobcat Marathon
May 31, 2020
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| Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
City Location
1. Hachie 50
-
May 1, 2020Friday
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50M, 50K, 26.2M run | 50M relay | kids run
Race Link
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Waxahachie, TX
Ellis County, TX
2. Salt Flats Endurance Runs
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May 1, 2020Friday
-
100M, 50M, 50K run
Extended Race Listing Information
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Wendover, UT
Tooele County, UT
3. Cheyenne Mountain Ultra 10x5k
-
May 2, 2020Saturday
-
50K, 5K run | 50K, 5K trail run | 50K relay
Race Link
-
Colorado Springs, CO
El Paso County, CO
4. Grayson Highlands 50K
-
May 2, 2020Saturday
-
50K trail run
Race Link
-
Mouth of Wilson, VA
Grayson County, VA
5. Greenland Trail Races
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TentativeMay 2, 2020Saturday
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50K, 25K, 8M trail run
Extended Race Listing Information
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Greenland, CO
Douglas County, CO
6. Lost Creek Trail Runs
-
May 2, 2020Saturday
-
50K, 30K, 5K trail run | 30K relay
Race Link
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Trail, OR
Jackson County, OR
7. May The 4th Be With You Races
-
May 2, 2020Saturday
-
6H, 8M, 4M trail run
Race Link
-
Thonotosassa, FL
Hillsborough County, FL
8. Miwok 100K
-
May 2, 2020Saturday
-
100K trail run
Race Link
-
Stinson Beach, CA
Marin County, CA
9. Outrun 24 Hour Trail Race
-
May 2, 2020Saturday
-
24H trail run
Extended Race Listing Information
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Kirtland, OH
Lake County, OH
10. Rock The Ridge
-
May 2, 2020Saturday
-
50M run | 50M trail run | 50M relay
Race Link
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New Paltz, NY
Ulster County, NY
11. Strolling Jim Run
-
May 2, 2020Saturday
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41.2M, 26.2M, 13.1M, 10K run
Race Link
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Wartrace, TN
Bedford County, TN
12. Twilight Zone 24 Hour Endurance Run
-
May 2, 2020Saturday
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24H trail run | 24H relay
Race Link
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Leonard, MI
Oakland County, MI
13. UROC 100K, Uber Rock 50K & Cruxy 25K
-
May 2, 2020Saturday
-
100K, 50K, 25K trail run
Race Link
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Charlottesville, VA
Albemarle County, VA
14. Wambaw Swamp Stomp
-
May 2, 2020Saturday
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50M, 50K trail run | 50M, 50K relay
Race Link
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Cordesville, SC
Berkeley County, SC
15. Crawfish Relay
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Past DateMay 3, 2019Friday
-
226M relay
Race Link
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New Orleans, LA
Orleans County, LA
16. Tacoma City Marathon - Day 2
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May 3, 2020Sunday
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50K, 26.2M, 13.1M run | 50K, 26.2M relay
Race Link
-
Tacoma, WA
Pierce County, WA
17. Armstrong Redwoods Trail Run
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Past DateMay 4, 2019Saturday
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50K, 30K, 17K, 9K, 5K trail run
Race Link
-
Guerneville, CA
Sonoma County, CA
18. Balata Capacity Relay
-
Past DateMay 4, 2019Saturday
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75.5M relay
Race Information
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North Berwick, ME
York County, ME
19. Battle Point Endurance Run
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Past DateMay 4, 2019Saturday
-
12H, 10H, 8H, 6H, 4H, 2H run
Race Link
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Bainbridge Island, WA
Kitsap County, WA
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.