Registration for BTR 2021 from June 1st. 8pm.
Registration for Barcelona Trail Races – Gran Trail Collserola (GTC) and Gran Trail Collserola Relay race (GTCR) has to be done through this website from August 1st until filling up the 500 numbers available or up to 24:00h on November 17 th. Relay race team registration must be done for entire team at same time. There is the possibility of adding a runner to an existing team later but with additional cost.