| Meerssen to Oerlinghausen | 146.09 mi (235.10 km) |
| Meerssen to Oestrich-Winkel | 116.32 mi (187.19 km) |
| Meerssen to Offenburg | 193.50 mi (311.40 km) |
| Meerssen to Oftersheim | 163.39 mi (262.96 km) |
| Meerssen to Ohrdruf | 217.24 mi (349.62 km) |
| Meerssen to Ohringen | 203.00 mi (326.70 km) |
| Meerssen to Olbernhau | 331.44 mi (533.40 km) |
| Meerssen to Olching | 310.80 mi (500.18 km) |
| Meerssen to Oldenburg | 187.87 mi (302.34 km) |
| Meerssen to Oldenburg in Holstein | 319.27 mi (513.81 km) |
| Meerssen to Olfen | 90.89 mi (146.28 km) |
| Meerssen to Olpe | 91.05 mi (146.52 km) |
| Meerssen to Olsberg | 122.72 mi (197.50 km) |
| Meerssen to Oranienburg | 344.56 mi (554.51 km) |
| Meerssen to Ortenberg | 149.35 mi (240.36 km) |
