Bernina - Poschiavo

From Ospizia Bernina ride south along the edge of Lago Bianco. The fire road crosses the railway lines and at the southern end of the lake passes some industrial looking buildings and veers to the right. At this point there is one fireroad that goes up into the mountains and one that only goes up a few meters before descending again. Take the lower of these tracks and ride it until you come to a junction where a singletrail drops down to your left into a valley, goes straight ahead into the woods or to the right towards the railway lines. 

The trail to the left is the more technical trail and suited to higher skilled riders, the trail to the right is much easier for those not comfortable with steep alpine terrain. (This trail rejoins with the easier option at Cavaglia)

Keep riding your chosen trail down past Alp Grum and Cavaglia. At Alp Grum you turn to the right down a graded gravel trail with stone drainage channels. This trail is pinch flat heaven. I’ve brought about 20 different people down this trail at various times and nearly every one of them pinch flatted at least once on this section. Pack spare tubes and either slow down for the drainage channels or bunnyhop them. 

Just before you re-enter the trail after the paved road section at Cavaglia take a moment to look at the Glacier Mills to your left. There is a metal staircase which takes you down a few metres to look into the holes which were bored out by stones getting rolled over by the glacier which once filled the valley. 

Eventually the trail drops into the woods crossing the railway lines a number of times. Each time it crosses the railway lines there is an obvious trail to follow on the other side. Do not ride down the side of the train tracks.

The woodland section of the trail is fast and flowing with some switchbacks thrown in for good measure it ends with a nice drop down onto a road just outside Poschiavo. Directly across the road at the end of the trail there is a small farm path that keeps going down hill and through a small tunnel which brings you to the main road into Poschiavo where you can get the train back up to the top of Berninapass and then ride the trail down to Pontrasina.