La Sfida, the race in freestyle technique of Engadin La Diagonela, became part of the Ski Classics Challengers circuit during Season XV. With an attractive 25-kilometer for the 2026 edition) course from Zuoz to Silvaplana, Switzerland.
La Sfida was a new long-distance skiing event of Engadin La Diagonela in Switzerland in 2024, starting in Zuoz and finishing at Silvaplana, and joined the Ski Classics Challengers circuit. The next edition will be on January 18, 2026.