Val Vedra, Sentiero dei Fiori
Beautiful tour at the foot of the Arera, practically all pedalable (except for a few very short sections at the end of the Flower Trail) Extendable to 1800 meters positive elevation gain with descent from Madonna del Frassino (untested) or descending to the Mezzeno huts with the Grumello or Barca hut trails (see other trails).
Start from over the pass, where from the main road or high parallel road one climbs easily to an altitude of 1600, then to the 1950s of hut 2000 always rideable but with gradients that could cause visions. From the hut hut 2000 you descend from the Fiori trail on nice technical passages, in a mountainous environment with final uphill section largely rideable (some pushing but never very steep)
Optional (recommended) stop at Branchino Lake a little higher up.
From the Branchino pass you continue on the trail and staying high you ride along the valley until the real descent begins, a nice mix of flow, stones, technical passages that closes with a thrilling flow finale that will leave you with a big smile on your face.
NB don't descend into the trail at the bottom of the valley, or else you'll have to carry your bike around in your hands for a couple of hours.