The 315-kilometre Vätternrundan takes place on 18–19 June 2027. Riders circle Lake Vättern through night and day in a recreational endurance challenge.
Complete the first registration step by 23 November. From 25 November at 19:00 CET, submit your registration code; payment is due within five days of receiving a start time.
Groups of 10–40 riders have a separate pre-booking option until 19 October. Their roster and payment must be complete by 23 November, although the preferred start time is not guaranteed. Paid entries cannot be carried over to the following year, so agree on the shared plan early.
Roads remain open to other traffic. Helmets are compulsory, and starts between 19:30 and 03:00 require front and rear lights and reflectors; the lighting requirement also applies on Saturday evening. Event rules require at least six hours of rest after finishing before driving a vehicle.