Sella Ronda and the Passo Giau are must dos, if you can do Tre Cime then I'd recommend it. Passo Falzarego is definitely worth doing, as is the Colle Santa Lucia down to Caprile if you can fit it in. And the Passo San Pellegrino, preferably from Moena to Falcade. The climb hits 18%, and it's a beast.
Sella Ronda and the Passo Giau are must dos, if you can do Tre Cime then I'd recommend it. Passo Falzarego is definitely worth doing, as is the Colle Santa Lucia down to Caprile if you can fit it in. And the Passo San Pellegrino, preferably from Moena to Falcade. The climb hits 18%, and it's a beast.