| Adelfia to Oerlinghausen | 850.99 mi (1,369.54 km) |
| Adelfia to Oestrich-Winkel | 754.53 mi (1,214.30 km) |
| Adelfia to Offenburg | 676.13 mi (1,088.12 km) |
| Adelfia to Oftersheim | 704.16 mi (1,133.24 km) |
| Adelfia to Ohrdruf | 739.68 mi (1,190.39 km) |
| Adelfia to Ohringen | 670.15 mi (1,078.50 km) |
| Adelfia to Olbernhau | 689.01 mi (1,108.86 km) |
| Adelfia to Olching | 567.11 mi (912.68 km) |
| Adelfia to Oldenburg | 931.06 mi (1,498.40 km) |
| Adelfia to Oldenburg in Holstein | 959.36 mi (1,543.93 km) |
| Adelfia to Olfen | 866.00 mi (1,393.69 km) |
| Adelfia to Olpe | 815.28 mi (1,312.07 km) |
| Adelfia to Olsberg | 818.69 mi (1,317.56 km) |
| Adelfia to Oranienburg | 829.77 mi (1,335.38 km) |
| Adelfia to Ortenberg | 747.42 mi (1,202.86 km) |
