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50Ms in the USA

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Razorback Endurance Race
Chatfield Ultra Racing Events (C.U.R.E.)
Midnight Madness
Devil Mountain Ultra Trail Race
Do-Wacka-Do Trail Runs
Mark Twain Endurance Runs
North Face Endurance Challenge - Utah
Ocean to Sound 50 Mile Relay
Yo Mommas Old School
Palo Duro Trail Run
Chicago Lakefront 50K/50M
Azalea 24 Hour Race
Run Amok
Dizzy Fifties Trail Run
Saint Sebastian 100
Tallahassee Ultra Distance Classic
Hawaii Kai Ultra Run - Kalama Valley
Wild Azalea Trail Challenge
Masters of All Terrain: 50K and 50M
San Diego 50 and Trail Marathon

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.

* Limited to 200

In order to keep the site running fast for everyone, we need to limit the searches to the first 200 races. If your search exceeds this limit, you will need to select additional criteria, such as distance, event type, location, dates, etc.