The nine national routes are described, followed by a series of tours radiating from Interlaken and finally in the Alpine Star, a trio of tours for the very fit. An attempt has been made to grade the routes. Each route is broken down into a series of stages, not days. The easy routes are normally flat or climb imperceptibly, and are suitable for families. The moderate routes have stages that are short and climb a maximum of 800m. The more challenging route stages: difficult or strenuous normally offer between 800 and 1500m climbing. The very demanding tours (Exceedingly Strenuous) described in the Alpine Star chapter are over 100km long and feature climbs of 3000m.