| Oldenburg in Holstein to Oerlinghausen | 185.54 mi (298.60 km) |
| Oldenburg in Holstein to Oestrich-Winkel | 321.20 mi (516.92 km) |
| Oldenburg in Holstein to Offenburg | 422.54 mi (680.02 km) |
| Oldenburg in Holstein to Oftersheim | 354.40 mi (570.34 km) |
| Oldenburg in Holstein to Ohrdruf | 239.97 mi (386.19 km) |
| Oldenburg in Holstein to Ohringen | 357.29 mi (575.00 km) |
| Oldenburg in Holstein to Olbernhau | 271.34 mi (436.68 km) |
| Oldenburg in Holstein to Olching | 421.88 mi (678.96 km) |
| Oldenburg in Holstein to Oldenburg | 135.23 mi (217.63 km) |
| Oldenburg in Holstein to Olfen | 230.23 mi (370.51 km) |
| Oldenburg in Holstein to Olpe | 260.33 mi (418.96 km) |
| Oldenburg in Holstein to Olsberg | 227.09 mi (365.47 km) |
| Oldenburg in Holstein to Oranienburg | 144.03 mi (231.79 km) |
| Oldenburg in Holstein to Ortenberg | 283.21 mi (455.79 km) |
| Oldenburg in Holstein to Oschatz | 227.10 mi (365.48 km) |
