| Lannion to Oestrich-Winkel | 522.28 mi (840.53 km) |
| Lannion to Offenburg | 520.21 mi (837.20 km) |
| Lannion to Oftersheim | 546.39 mi (879.34 km) |
| Lannion to Ohrdruf | 648.25 mi (1,043.26 km) |
| Lannion to Ohringen | 587.82 mi (946.00 km) |
| Lannion to Olbernhau | 760.36 mi (1,223.67 km) |
| Lannion to Olching | 676.69 mi (1,089.02 km) |
| Lannion to Oldenburg | 591.43 mi (951.82 km) |
| Lannion to Oldenburg in Holstein | 724.65 mi (1,166.22 km) |
| Lannion to Olfen | 520.94 mi (838.38 km) |
| Lannion to Olpe | 526.23 mi (846.89 km) |
| Lannion to Olsberg | 559.02 mi (899.66 km) |
| Lannion to Oranienburg | 778.71 mi (1,253.21 km) |
| Lannion to Ortenberg | 571.25 mi (919.34 km) |
| Lannion to Oschatz | 754.65 mi (1,214.49 km) |
