| Douarnenez to Oestrich-Winkel | 573.03 mi (922.20 km) |
| Douarnenez to Offenburg | 563.89 mi (907.49 km) |
| Douarnenez to Oftersheim | 594.41 mi (956.61 km) |
| Douarnenez to Ohrdruf | 700.98 mi (1,128.12 km) |
| Douarnenez to Ohringen | 635.08 mi (1,022.06 km) |
| Douarnenez to Olbernhau | 812.12 mi (1,306.98 km) |
| Douarnenez to Olching | 720.14 mi (1,158.95 km) |
| Douarnenez to Oldenburg | 649.96 mi (1,046.02 km) |
| Douarnenez to Oldenburg in Holstein | 783.54 mi (1,260.98 km) |
| Douarnenez to Olfen | 577.41 mi (929.25 km) |
| Douarnenez to Olpe | 580.60 mi (934.39 km) |
| Douarnenez to Olsberg | 614.03 mi (988.18 km) |
| Douarnenez to Oranienburg | 834.99 mi (1,343.79 km) |
| Douarnenez to Ortenberg | 622.99 mi (1,002.61 km) |
| Douarnenez to Oschatz | 808.04 mi (1,300.41 km) |
