This ride starts and finishes in Postalesio, but you could easily start from anywhere – you'd just end up climbing even further.
From Triangia the road is tarmacked beautifully up to at least 1,100 metres where you'll find a cluster of houses called Ligari. You can fill up your bottle and nip into the 'village' for some cake and a chat at the restaurant. It's open all-year round.
The road then worsens a little, but doesn't turn to gravel until around 1,700 metres of altitude. Then expect steep, concrete corners and rutted out gravel. Once you reach the cross at 1,900 metres, the track 'flattens' out for 6-7km before dropping down ever so slightly to Alpe Colina. The whole of this stretch is pretty beaten-up gravel so mountain bike tires are definitely recommended.
From Alpe Colina, you can take the road straight down to Postalesio. The first 1.5 km is still gravel, but unfortunately in 2017 they made the decision to tarmac a lot more of the road. It's in a great condition now if you're into going fast. There are a lot of options for proper descending on trails, just look for deviations on either side of the road.
At 1,000 metres you'll reach Pra Lone, an opening with a few houses, and here's where the real trails start, dropping down to Ca' Moroni then Postalesio. These are not gravel bike-friendly, just sayin'.
Route reserved for summer and early autumn.