This is a beautiful day of glen and low-pass walking on good trails and the old military road, with some moderate gradients, but nothing too demanding. There is a choice of two routes to take you from Crianlarich, back up into the forests above Strath Fillan. Then it is down and along to the historic ruins of St. Fillans for a pause before you carry on to Tyndrum, an old mineral mining village, where you will find cafés, restaurants and shops. There follows a gradual climb up out of the village, parallel with the road and rail communications. This then passes into a classic glacier-carved 'U' shaped valley of Glen Auch/Glen Orchy. The most spectacular section is that of walking under the titan bulk of Beinn Dorain (1,076m), before reaching refreshment or accommodation at Bridge of Orchy.