| Poggio a Caiano to Oerlinghausen | 573.90 mi (923.60 km) |
| Poggio a Caiano to Oestrich-Winkel | 450.98 mi (725.78 km) |
| Poggio a Caiano to Offenburg | 354.50 mi (570.51 km) |
| Poggio a Caiano to Oftersheim | 401.36 mi (645.93 km) |
| Poggio a Caiano to Ohrdruf | 484.69 mi (780.04 km) |
| Poggio a Caiano to Ohringen | 379.31 mi (610.45 km) |
| Poggio a Caiano to Olbernhau | 485.02 mi (780.57 km) |
| Poggio a Caiano to Olching | 303.09 mi (487.78 km) |
| Poggio a Caiano to Oldenburg | 657.42 mi (1,058.01 km) |
| Poggio a Caiano to Oldenburg in Holstein | 724.37 mi (1,165.77 km) |
| Poggio a Caiano to Olfen | 571.82 mi (920.26 km) |
| Poggio a Caiano to Olpe | 519.80 mi (836.53 km) |
| Poggio a Caiano to Olsberg | 534.15 mi (859.64 km) |
| Poggio a Caiano to Oranienburg | 625.47 mi (1,006.59 km) |
| Poggio a Caiano to Ortenberg | 461.56 mi (742.81 km) |
