Ragnar is a long-running U.S. relay-race company that puts on overnight, team-based endurance events in two formats. Ragnar Road relays send teams of 12 (or smaller Ultra and Sprint teams) roughly 200 miles point-to-point over about 36 hours, running in rotation out of vans through the day and night. Ragnar Trail relays keep teams of 8 (or 4-person Ultra, 3-person Sprint, and 2-person Black Loop teams) at a single basecamp — “Ragnar Village” — where runners rotate through three looped trail courses, sleeping in tents between legs. Ragnar says it has run more than 350 races over 20 years with around 750,000 participants. Registration for every Ragnar race is handled on Let’s Do This, Ragnar’s own ticketing platform, not on Ragnar’s website.