| Calvizzano to Oegstgeest | 904.29 mi (1,455.32 km) |
| Calvizzano to Oirschot | 845.27 mi (1,360.33 km) |
| Calvizzano to Oisterwijk | 852.44 mi (1,371.87 km) |
| Calvizzano to Oldebroek | 888.04 mi (1,429.17 km) |
| Calvizzano to Oldenzaal | 859.57 mi (1,383.35 km) |
| Calvizzano to Ommen | 881.75 mi (1,419.03 km) |
| Calvizzano to Oosterend | 918.35 mi (1,477.93 km) |
| Calvizzano to Oosterhout | 864.10 mi (1,390.63 km) |
| Calvizzano to Oosterwolde | 913.23 mi (1,469.71 km) |
| Calvizzano to Oostzaan | 909.04 mi (1,462.95 km) |
| Calvizzano to Opmeer | 923.17 mi (1,485.70 km) |
| Calvizzano to Oss | 855.74 mi (1,377.18 km) |
| Calvizzano to Oud-Beijerland | 885.12 mi (1,424.47 km) |
| Calvizzano to Oudenbosch | 869.25 mi (1,398.92 km) |
| Calvizzano to Oudewater | 885.27 mi (1,424.71 km) |
