Old Dominion 100 Ultra

Racers love the Old Dominion 100 because it’s old school – no lottery (though it does sell out), basic aid stations, 40-year-old sign posts, and a spray-painted start line. Yet it’s every bit as tough as flashy events, like the UTMB and Western States, with 14,000 feet of elevation on a mix of paved road, gravel, and trail. Thanks to its difficulty, it has earned a place in the “Grand Slam of Ultrarunning” – an epic challenge where runners must complete four of the five most prestigious 100-milers in the United States in a single calendar year. Other races in the Grand Slam series include Leadville, Wasatch Front, the Vermont 100, and Western States.