| Altdorf to Oerlinghausen | 352.38 mi (567.10 km) |
| Altdorf to Oestrich-Winkel | 218.43 mi (351.52 km) |
| Altdorf to Offenburg | 115.25 mi (185.47 km) |
| Altdorf to Oftersheim | 173.02 mi (278.44 km) |
| Altdorf to Ohrdruf | 289.84 mi (466.46 km) |
| Altdorf to Ohringen | 166.11 mi (267.33 km) |
| Altdorf to Olbernhau | 338.60 mi (544.93 km) |
| Altdorf to Olching | 155.41 mi (250.10 km) |
| Altdorf to Oldenburg | 434.11 mi (698.63 km) |
| Altdorf to Oldenburg in Holstein | 522.92 mi (841.56 km) |
| Altdorf to Olfen | 339.79 mi (546.84 km) |
| Altdorf to Olpe | 289.02 mi (465.14 km) |
| Altdorf to Olsberg | 309.84 mi (498.64 km) |
| Altdorf to Oranienburg | 455.43 mi (732.94 km) |
| Altdorf to Ortenberg | 241.84 mi (389.21 km) |
