From Cortina centre follow the road heading up to Passo Falzarego.
At Pocol ( about 5km ride), turn left and attempt the demanding climb up to Passo Giau.
Descend 10 km. Turn left and continue towards Passo Staulanza. Once you reach Forno di Zoldo, turn left and ascend as far as Passo Cibiana.
Ride through the murals of the namesake village and continue downhill as far as the valley floor. At Venas turn left to return to Cortina. The entire loop is about 20 km.