P-BodioLomnago/Sumirago (43 km)

Very nice route to explore the area; it's up&down with short climbs (most difficult Bodio Lomnago with 3,5 km climb), but you need good legs to complete. If you look at the altitute, there are no big mountains, but it's a series of climbs, mostly shorter than 1km. Take care about route conditions, because pavement it's very often not good.