100 km Backyard Ultra Running: The Race Calendar for Running Races
Looking for a challenging race? Our race calendar and competition calendar for running shows all 100 km Backyard Ultra running races and competitions. Whether you prefer to run in Copenhagen or another region like Central Jutland, North Jutland, Zealand, or Southern Denmark, you can find your next running event here. Find your perfect race in our race calendar – your guide to the best running races!