The definitive Dolomites circuit: a 412 km loop from Bolzano across the Sella Ronda passes, north to the Tre Cime di Lavaredo, and back through Passo Giau and the Marmolada. Three days, four UNESCO-listed mountain groups, and more switchbacks than most riders encounter in a lifetime. Day 1 crosses Pordoi and Falzarego into Cortina. Day 2 pushes north to the Tre Cime before looping back through Val Gardena. Day 3 returns via Passo Sella, the Marmolada glacier, and Passo Costalunga.
Clone it to your planner, customize dates and stops, then ride. All free.