| Castel Gandolfo to Oschatz | 660.43 mi (1,062.85 km) |
| Castel Gandolfo to Oschersleben | 712.62 mi (1,146.85 km) |
| Castel Gandolfo to Osnabruck | 759.19 mi (1,221.80 km) |
| Castel Gandolfo to Ostbevern | 746.02 mi (1,200.60 km) |
| Castel Gandolfo to Osterburg | 763.65 mi (1,228.98 km) |
| Castel Gandolfo to Ostercappeln | 761.19 mi (1,225.02 km) |
| Castel Gandolfo to Osterhofen | 480.88 mi (773.90 km) |
| Castel Gandolfo to Osterholz-Scharmbeck | 812.33 mi (1,307.32 km) |
| Castel Gandolfo to Osternienburg | 695.24 mi (1,118.89 km) |
| Castel Gandolfo to Osterode | 698.86 mi (1,124.71 km) |
| Castel Gandolfo to Osterwieck | 711.95 mi (1,145.77 km) |
| Castel Gandolfo to Ostfildern | 510.16 mi (821.02 km) |
| Castel Gandolfo to Osthofen | 587.98 mi (946.27 km) |
| Castel Gandolfo to Ostrhauderfehn | 819.55 mi (1,318.94 km) |
| Castel Gandolfo to Ostringen | 550.27 mi (885.57 km) |
