12hr december ultra marathons
7 races
The Tennessee Mile
Dec 5-6, 2025 (Fri-Sat)
Franklin, Tennessee, United States
$71.56 - $121.71
6h
8h
12h
24h
40h
24h de Ploeren
Dec 6, 2025 (Sat)
Ploeren, Brittany, France
6h
12h
24h
Ollie's Ultra
Dec 6, 2025 (Sat)
Chanute, Kansas, United States
$94.51 - $153.37
6h
9h
12h
24h
Old Fort Strong Endurance Festival
Dec 6, 2025 (Sat)
Old Fort, North Carolina, United States
6h
12h
Perpetual Motion
Dec 6, 2025 (Sat)
Grapevine, Texas, United States
6h
12h
24h
New Year's One Day
Dec 31, 2025 (Wed)
San Jose, California, United States
2.3
$100 - $120
50mi
100mi
6h
12h
24h
The Critter
Dec 31, 2025 (Wed)
Waverly, Iowa, United States
$50 - $75
8h
12h
Showing 1 - 7 of 7 events