From 1 to 7 September as well as from 16 to 20 September and 22 to 30 September, the Bündner Hochjagd takes place. During this time, bike operations on certain sections of the Runca and Nagens Trails are closed from 4:45 p.m. Detours will be signposted accordingly.

• The Val gl' Uors section on the Runca Trail
• The section B7 to C3 on the Nagens Trail