Der Donauberglandweg ist ein etwa 57 Kilometer langer Prädikatswanderweg mit über 4.500 Höhenmetern vom Lemberg bis zum Kloster Beuron. Er führt entlang des Albtraufs über die südwestliche Schwäbische Alb und durch das Obere Donautal. Er liegt in einem Dreieck zwischen Sigmaringen, Tuttlingen und Rottweil in Baden-Württemberg.
https://de.m.wikipedia.org/wiki/Donauberglandweg

The Mary Towneley Loop is a 47-mile (76 km) circular route that forms part of the Pennine Bridleway National Trail, along the borders of Lancashire and Yorkshire. The loop was opened in 2002, the first section of the Pennine Bridleway.[1]

It is named in memory of Mary, Lady Towneley, who drew attention to the poor state of England's bridleways and the need for a long-distance route for horse-riders by riding with two friends in September 1986 from Hexham in Northumberland to Ashbourne in Derbyshire. She died in 2001.

Starts at Storlien and ends at Högfjällshotellet in Sälen. Dalarna.  340km.

This route is pretty much straight forward: it is mostly made of the New Millennium Loop Trail and is using a nice way to get to it. It goes for around 14.8 miles and elevation gain is about 2,831ft. It can be done clockwise or counter-clockwise, but is better counter-clockwise if you are somewhat sensitive to height. Access to the actual loop is best from the Bark Park at 4232 Las Virgenes Road, Calabasas CA 91302, that has plenty of parking, a porta potty and a water fountain.

The „Grosse Reibn“ (Great Round) is normally a very famous ski route, also called „The Haute Route of Berchtesgaden“. 
The ski route starts at the big parking lot at lake Königssee and it ends after 50k and around 4500m of vertical gain at the end oft the Wimbach valley near the village Ramsau. 
During this tour you cross some mountains and can find some very special powder moments.