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1,669 marathons found for Ultra marathon, United States. Keep the list broad first, then tighten the filters when a race looks realistic.





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Long Beach, California, United States
13DEC
ULTRA
Winter Runderland 5K, 10K, & Half Marathon. Kids Dash
Long Beach, California, United States
December 13, 2026 DEC
United States
14DEC
ULTRA
5th Tucson 50K - 50km
United States
December 14, 2026 DEC
Maryland, United States
14DEC
ULTRA
Naptown Half Marathon & 10K
Maryland, United States
December 14, 2026 DEC
Lake Mills, Wisconsin, United States
18DEC
ULTRA
Quiet Silence
Lake Mills, Wisconsin, United States
December 18, 2026 DEC
United States
19DEC
ULTRA
17th Desert Solstice 24 Hour Run - 24h
United States
December 19, 2026 DEC
United States
19DEC
ULTRA
19th Lookout Mountain 50 Mile Race - 50mi
United States
December 19, 2026 DEC
United States
19DEC
ULTRA
28th Ancient Oaks 100 Mile Run - 100mi
United States
December 19, 2026 DEC
United States
19DEC
ULTRA
2nd Sleigh It - 12h
United States
December 19, 2026 DEC
United States
19DEC
ULTRA
2nd Sleigh It - 6h
United States
December 19, 2026 DEC
United States
19DEC
ULTRA
3rd Texas Double Saturday Run - 50km
United States
December 19, 2026 DEC
Molena, Georgia, United States
19DEC
ULTRA
8 Hours of Christmas
Molena, Georgia, United States
December 19, 2026 DEC
Irving, Texas, United States
19DEC
ULTRA
Irving Frost Marathon
Irving, Texas, United States
December 19, 2026 DEC
Mount Dora, Florida, United States
19DEC
ULTRA
Mount Dora Half Marathon & 5K
Mount Dora, Florida, United States
December 19, 2026 DEC
Dripping Springs, Texas, United States
19DEC
ULTRA
Outlast Austin
Dripping Springs, Texas, United States
December 19, 2026 DEC
St. Joseph, Missouri, United States
19DEC
ULTRA
River Bluff Trail Runs
St. Joseph, Missouri, United States
December 19, 2026 DEC
Ozawkie, Kansas, United States
19DEC
ULTRA
Slough & Steady
Ozawkie, Kansas, United States
December 19, 2026 DEC
Long Beach, California, United States
19DEC
ULTRA
The Jingle Bell Dash Kids Dash, 1 Miler, 5K, 10K and Half Marathon & Santa Paws Doggie Run
Long Beach, California, United States
December 19, 2026 DEC
Greenville, South Carolina, United States
19DEC
ULTRA
The Longest Night (50mi - 50k - 26.2 - 13.1 - 10k)
Greenville, South Carolina, United States
December 19, 2026 DEC
United States
20DEC
ULTRA
3rd Texas Double Sun Run - 50km
United States
December 20, 2026 DEC
Mount Pleasant, South Carolina, United States
20DEC
ULTRA
Charleston Itty Bitty 50
Mount Pleasant, South Carolina, United States
December 20, 2026 DEC
Hawaii, United States
20DEC
ULTRA
Hawaii Bird Conservation Marathon
Hawaii, United States
December 20, 2026 DEC
Huntington Beach, California, United States
20DEC
ULTRA
Santa’s Reindeer Run - 5K, 10K, and Half Marathon
Huntington Beach, California, United States
December 20, 2026 DEC
Brooklyn, New York, United States
20DEC
ULTRA
The Holiday Half Marathon!
Brooklyn, New York, United States
December 20, 2026 DEC
Long Beach, California, United States
25DEC
ULTRA
Jingle All the Way - Christmas Day 5K, 10K, Half Marathon, Kids Dash by Califlow Runs
Long Beach, California, United States
December 25, 2026 DEC

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