| Castel Gandolfo to Oststeinbek | 823.15 mi (1,324.73 km) |
| Castel Gandolfo to Ottendorf-Okrilla | 654.08 mi (1,052.64 km) |
| Castel Gandolfo to Ottersberg | 801.07 mi (1,289.20 km) |
| Castel Gandolfo to Ottobrunn | 439.30 mi (706.98 km) |
| Castel Gandolfo to Ottweiler | 589.19 mi (948.21 km) |
| Castel Gandolfo to Overath | 684.73 mi (1,101.97 km) |
| Castel Gandolfo to Oyten | 799.72 mi (1,287.03 km) |
| Castel Gandolfo to Paderborn | 712.97 mi (1,147.42 km) |
| Castel Gandolfo to Papenburg | 819.21 mi (1,318.40 km) |
| Castel Gandolfo to Parchim | 807.19 mi (1,299.05 km) |
| Castel Gandolfo to Pasewalk | 814.44 mi (1,310.72 km) |
| Castel Gandolfo to Passau | 473.39 mi (761.84 km) |
| Castel Gandolfo to Pattensen | 739.29 mi (1,189.78 km) |
| Castel Gandolfo to Pegnitz | 555.95 mi (894.72 km) |
| Castel Gandolfo to Peine | 739.26 mi (1,189.73 km) |
