| Plougastel-Daoulas to Oestrich-Winkel | 569.15 mi (915.96 km) |
| Plougastel-Daoulas to Offenburg | 563.63 mi (907.07 km) |
| Plougastel-Daoulas to Oftersheim | 592.05 mi (952.81 km) |
| Plougastel-Daoulas to Ohrdruf | 695.93 mi (1,119.99 km) |
| Plougastel-Daoulas to Ohringen | 633.12 mi (1,018.91 km) |
| Plougastel-Daoulas to Olbernhau | 807.70 mi (1,299.87 km) |
| Plougastel-Daoulas to Olching | 720.07 mi (1,158.84 km) |
| Plougastel-Daoulas to Oldenburg | 639.95 mi (1,029.91 km) |
| Plougastel-Daoulas to Oldenburg in Holstein | 773.00 mi (1,244.02 km) |
| Plougastel-Daoulas to Olfen | 569.58 mi (916.65 km) |
| Plougastel-Daoulas to Olpe | 574.42 mi (924.43 km) |
| Plougastel-Daoulas to Olsberg | 607.38 mi (977.48 km) |
| Plougastel-Daoulas to Oranienburg | 827.33 mi (1,331.46 km) |
| Plougastel-Daoulas to Ortenberg | 618.54 mi (995.45 km) |
| Plougastel-Daoulas to Oschatz | 802.57 mi (1,291.61 km) |
