| Concarneau to Oestrich-Winkel | 559.83 mi (900.96 km) |
| Concarneau to Offenburg | 547.11 mi (880.49 km) |
| Concarneau to Oftersheim | 579.62 mi (932.81 km) |
| Concarneau to Ohrdruf | 688.94 mi (1,108.75 km) |
| Concarneau to Ohringen | 619.84 mi (997.53 km) |
| Concarneau to Olbernhau | 799.30 mi (1,286.35 km) |
| Concarneau to Olching | 703.07 mi (1,131.48 km) |
| Concarneau to Oldenburg | 644.21 mi (1,036.76 km) |
| Concarneau to Oldenburg in Holstein | 778.41 mi (1,252.74 km) |
| Concarneau to Olfen | 568.83 mi (915.45 km) |
| Concarneau to Olpe | 570.00 mi (917.33 km) |
| Concarneau to Olsberg | 603.94 mi (971.94 km) |
| Concarneau to Oranienburg | 825.95 mi (1,329.24 km) |
| Concarneau to Ortenberg | 610.35 mi (982.27 km) |
| Concarneau to Oschatz | 796.39 mi (1,281.66 km) |
