| Marco de Canavezes to Orbetello | 998.72 mi (1,607.29 km) |
| Marco de Canavezes to Oria | 1,343.59 mi (2,162.31 km) |
| Marco de Canavezes to Oristano | 882.04 mi (1,419.51 km) |
| Marco de Canavezes to Orta Nova | 1,235.51 mi (1,988.36 km) |
| Marco de Canavezes to Orte | 1,058.48 mi (1,703.45 km) |
| Marco de Canavezes to Ortona | 1,161.47 mi (1,869.21 km) |
| Marco de Canavezes to Orvieto | 1,043.95 mi (1,680.08 km) |
| Marco de Canavezes to Orzinuovi | 952.54 mi (1,532.97 km) |
| Marco de Canavezes to Osimo | 1,113.10 mi (1,791.36 km) |
| Marco de Canavezes to Ospitaletto | 961.35 mi (1,547.14 km) |
| Marco de Canavezes to Ostuni | 1,338.17 mi (2,153.58 km) |
| Marco de Canavezes to Ottaviano | 1,176.51 mi (1,893.41 km) |
| Marco de Canavezes to Ovada | 881.07 mi (1,417.94 km) |
| Marco de Canavezes to Ozieri | 895.54 mi (1,441.23 km) |
| Marco de Canavezes to Paceco | 1,121.40 mi (1,804.72 km) |
