The Alta Valtellina Bike Marathon trails are 90% dirt roads with a firm surface, with some specially groomed and designed single track sections all for easy riding. The routes span the municipalities of Valdidentro, Livigno and Valdisotto. Mountain, nature, sport and lots of fun. Choose the route that’s right for you! The Alta Valtellina Bike Marathon is a must for MTB lovers and awaits you on Saturday, with the start of the Marathon route, followed by Endurance and Classic. On Sunday, the Marathon Kids, a mini granfondo dedicated to the little ones, kicks off. Start and finish are in the locality of Rasin, Valdidentro.