| Rostock to Oerlinghausen | 205.24 mi (330.30 km) |
| Rostock to Oestrich-Winkel | 332.22 mi (534.65 km) |
| Rostock to Offenburg | 428.25 mi (689.20 km) |
| Rostock to Oftersheim | 359.18 mi (578.04 km) |
| Rostock to Ohrdruf | 232.50 mi (374.17 km) |
| Rostock to Ohringen | 355.73 mi (572.49 km) |
| Rostock to Olbernhau | 241.42 mi (388.53 km) |
| Rostock to Olching | 408.03 mi (656.66 km) |
| Rostock to Oldenburg | 173.24 mi (278.80 km) |
| Rostock to Oldenburg in Holstein | 52.70 mi (84.82 km) |
| Rostock to Olfen | 256.67 mi (413.07 km) |
| Rostock to Olpe | 278.34 mi (447.95 km) |
| Rostock to Olsberg | 242.84 mi (390.81 km) |
| Rostock to Oranienburg | 102.44 mi (164.87 km) |
| Rostock to Ortenberg | 288.56 mi (464.39 km) |
