Regitzer Spitz, Mountain summit and scenic viewpoint in Graubünden, Switzerland.

Regitzer Spitz is a 1135 meter (3724 foot) mountain summit and the westernmost extension of the Rätikon range in Graubünden. The peak displays prominent limestone formations and drops steeply on its eastern faces.

The mountain served as a military stronghold for the Swiss Army with fortifications positioned along its slopes to defend the strategic Rhine Valley passage. These defensive structures marked an important phase in the area's past.

The mountain lies above Fläsch, a wine village on the Rhine. The Regitzer-Challenge, organised by the Grischuni-Runners running group, has sent walkers, runners, Nordic walkers and cyclists up the summit since 2014, with a count category for the most ascents in a year and a separate time race.

The eastern flank rises gently, making the summit a popular destination for hikers and mountain bikers; a steep path leads directly down to Fläsch, and other trails allow a circular route. The hiking trail was closed from autumn 2013 to summer 2014 after a rockfall and has since reopened on a new, safe routing.

Two major rockfalls occurred between 2012 and 2013, resulting in modifications to the hiking trails in the area. The aftermath of these events became part of the mountain's recent story and ongoing landscape changes.