Swiss National Bike Routes
The Swiss National Bike Routes (German: Nationale Velorouten, French: Itinéraires à vélo nationaux, Italian: Percorsi nazionali) are the national cycling route network of Switzerland. There are currently nine such long-distance cycling routes criss-crossing the Swiss nation and these were established mainly to promote bicycle tourism.
Source: Wikipedia — Swiss National Bike Routes (CC BY-SA 4.0)