100K Relays in the USA
Lima, OH
UnitedAF Ultramarathon
Oct 19, 2024
Nashville, IN
Dances With Dirt - Gnaw Bone
May 18, 2024
Jackson, MS
Big Butts
Jul 20, 2024
Toledo, OH
Miakonda Trail Ultra
Sep 2, 2023
Traverse City, MI
Traverse City Trail Running Festival
May 11, 2024
May 10, 2024
Madison, WI
MadCity Ultras
Apr 26, 2025
La Grange, WI
Kettle Moraine 100 Endurance Runs
Jun 8, 2024
Cumberland, RI
Survival of the F.I.T.test 24 Hour Trail Ultra
Oct 21, 2023
West Columbia, TX
Grit Ultra Endurance Challenge
Dec 31, 2023
San Diego, CA
Sycamore Canyon Trail Race
Feb 24, 2024
New Gloucester, ME
Trail Festival at Pineland Farms
May 25, 2024
May 26, 2024
Burns, TN
Mo' Bell
Oct 12, 2024
Wellsboro, PA
Pine Creek Challenge
Sep 7, 2024
High Ridge, MO
The Shippey Endurance Runs
Jan 18, 2025
Jan 19, 2025
Canal Fulton, OH
Eagle Up Ultra
Jun 1, 2024
Norton, VA
Cloudsplitter 100
Oct 12, 2024
Cat Spring, TX
Habanero Hundred
Aug 24, 2024
Booneville, IA
Booneville Backroads Ultra
Aug 31, 2024
Fort Pierce, FL
Saint Lucie Skeeter Skoot
Nov 23, 2024
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| Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
City Location
1. Miakonda Trail Ultra
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Past DateSep 2, 2023Saturday
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24H, 100K, 15K trail run | 24H relay
More Information
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Toledo, OH
Lucas County, OH
2. Survival of the F.I.T.test 24 Hour Trail Ultra
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Past DateOct 21, 2023Saturday
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24H, 100M, 100K, 50K trail run | 24H relay
More Information
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Cumberland, RI
Providence County, RI
3. Tidewater Strider Dismal Swamp 100K/ 50K / Marathon and 100K Relay
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Past DateDec 2, 2023Saturday
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100K, 50K, 26.2M run | 100K relay
More Information
- Chesapeake, VA
4. Grit Ultra Endurance Challenge
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Past DateDec 31, 2023Sunday
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100M, 100K, 50M, 50K run | last man standing | 100M, 100K, 50M, 50K relay
More Information
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West Columbia, TX
Brazoria County, TX
5. Sycamore Canyon Trail Race
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Past DateFeb 24, 2024Saturday
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100K, 50K, 13.1M trail run | 100K relay
More Information
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San Diego, CA
San Diego County, CA
6. Blackbeard's Revenge 100 Ultra & Relay
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Past DateMar 23, 2024Saturday
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100M, 100K run | 100M relay
Virtual OptionMore Information
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Corolla, NC
Currituck County, NC
7. Traverse City Trail Running Festival
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May 11, 2024Saturday
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100K, 50K, 25K, 10K trail run | 100K relay
More Information
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Traverse City, MI
Grand Traverse County, MI
8. Dances With Dirt - Gnaw Bone
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May 18, 2024Saturday
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50M, 50K, 26.2M, 13.1M, 10K, 5K trail run | 100K relay
More Information
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Nashville, IN
Brown County, IN
9. Trail Festival at Pineland Farms
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May 25, 2024Saturday
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24H, 100K, 50K, 25K, 5K trail run | 24H relay
More Information
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New Gloucester, ME
Cumberland County, ME
10. Eagle Up Ultra
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Jun 1, 2024Saturday
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100M, 100K, 50M, 50K trail run | 100M relay
More Information
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Canal Fulton, OH
Stark County, OH
11. Hell Hole Hundred
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Jun 1, 2024Saturday
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100M, 100K, 50K, 16M trail run | 100M relay
More Information
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Bethera, SC
Berkeley County, SC
12. Kettle Moraine 100 Endurance Runs
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Jun 8, 2024Saturday
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100M, 100K, 38M, 50K trail run | 100M relay
More Information
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La Grange, WI
Walworth County, WI
13. Big Butts
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Jul 20, 2024Saturday
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100K, 50K trail run | 100K relay
More Information
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Jackson, MS
Hinds County, MS
14. Habanero Hundred
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Aug 24, 2024Saturday
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100M, 100K, 26.2M, 13.1M, 10K trail run | 100M, 100K relay
More Information
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Cat Spring, TX
Austin County, TX
15. Booneville Backroads Ultra
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Aug 31, 2024Saturday
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100M, 100K, 50K, 10K run | 50K relay
More Information
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Booneville, IA
Dallas County, IA
16. Pine Creek Challenge
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Sep 7, 2024Saturday
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100M, 100K, 50M, 26.2M trail run | 100M relay
More Information
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Wellsboro, PA
Tioga County, PA
17. Dances With Dirt - Michigan
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Sep 21, 2024Saturday
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50M, 50K, 30K trail run | 100K relay
More Information
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Hell, MI
Livingston County, MI
18. American Birkebeiner Trail Run
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Sep 28, 2024Saturday
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100K, 26.2M, 13.1M, 5K trail run | 100K, 26.2M relay
More Information
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Cable, WI
Bayfield County, WI
19. Cloudsplitter 100
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Oct 12, 2024Saturday
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100M, 100K, 50K, 25K trail run | 100M relay
More Information
- Norton, VA
20. Mo' Bell
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Oct 12, 2024Saturday
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24H, 100M, 75M, 12H, 100K, 50M, 50K, 26.2M, 13.1M, 10K, 5K, 1M run | 24H, 12H relay
More Information
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Burns, TN
Dickson 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.