Each year on the last Saturday of August or first Saturday of September the Stelvio National Park administration organizes the Stelvio Bike Day. On that day the roads from Bormio and Prad to the pass, as well as the road from Santa Maria Val Müstair to the Umbrail Pass are closed to all traffic except for bicycles. On average around 12,000 cyclists participate in the Bike Day, with the majority taking the road from Prad to the pass and the descent over the Umbrail pass to Val Müstair.