For each event, it is individually determined whether a cancellation is possible. Please contact the organizer/timekeeper for this matter. You can find the contact details on my.raceresult.com.
Please note that the 14-day right of withdrawal for online transactions does not apply to sports events or concerts. See also German Civil Code (BGB) § 312g (2) No. 9.
Unilateral withdrawal may result in a suspension for future bookings.