K9 Biathlon - Nordic Lake

12 Timer Viborg is a 12-hour mountain bike relay in Viborg, run non-stop from morning to evening. Participants race on a loop of about 10 to 12 km, with the objective to ride as many laps as possible before time expires. The race accommodates club teams, company teams, or solo riders, functioning as both a team challenge and an extended individual test. The organizers describe the trail as some of Denmark’s finest mountain bike terrain, with an accessible entry level: anyone with basic MTB technique can navigate it.