| Monte Porzio Catone to Oststeinbek | 818.79 mi (1,317.72 km) |
| Monte Porzio Catone to Ottendorf-Okrilla | 649.01 mi (1,044.49 km) |
| Monte Porzio Catone to Ottersberg | 796.95 mi (1,282.56 km) |
| Monte Porzio Catone to Ottobrunn | 434.86 mi (699.85 km) |
| Monte Porzio Catone to Ottweiler | 586.23 mi (943.45 km) |
| Monte Porzio Catone to Overath | 681.35 mi (1,096.53 km) |
| Monte Porzio Catone to Oyten | 795.63 mi (1,280.45 km) |
| Monte Porzio Catone to Paderborn | 709.08 mi (1,141.16 km) |
| Monte Porzio Catone to Papenburg | 815.47 mi (1,312.37 km) |
| Monte Porzio Catone to Parchim | 802.52 mi (1,291.53 km) |
| Monte Porzio Catone to Pasewalk | 809.41 mi (1,302.62 km) |
| Monte Porzio Catone to Passau | 468.32 mi (753.69 km) |
| Monte Porzio Catone to Pattensen | 735.10 mi (1,183.03 km) |
| Monte Porzio Catone to Pegnitz | 551.46 mi (887.49 km) |
| Monte Porzio Catone to Peine | 734.96 mi (1,182.80 km) |
