| Rennes to Oestrich-Winkel | 456.82 mi (735.19 km) |
| Rennes to Offenburg | 442.29 mi (711.79 km) |
| Rennes to Oftersheim | 475.25 mi (764.85 km) |
| Rennes to Ohrdruf | 587.13 mi (944.90 km) |
| Rennes to Ohringen | 515.22 mi (829.17 km) |
| Rennes to Olbernhau | 696.45 mi (1,120.83 km) |
| Rennes to Olching | 598.32 mi (962.91 km) |
| Rennes to Oldenburg | 554.82 mi (892.89 km) |
| Rennes to Oldenburg in Holstein | 689.94 mi (1,110.36 km) |
| Rennes to Olfen | 473.32 mi (761.73 km) |
| Rennes to Olpe | 470.62 mi (757.39 km) |
| Rennes to Olsberg | 505.33 mi (813.25 km) |
| Rennes to Oranienburg | 728.69 mi (1,172.71 km) |
| Rennes to Ortenberg | 507.91 mi (817.40 km) |
| Rennes to Oschatz | 694.96 mi (1,118.43 km) |
