| Pornic to Oestrich-Winkel | 502.65 mi (808.94 km) |
| Pornic to Offenburg | 474.78 mi (764.09 km) |
| Pornic to Oftersheim | 515.37 mi (829.40 km) |
| Pornic to Ohrdruf | 635.09 mi (1,022.07 km) |
| Pornic to Ohringen | 553.23 mi (890.34 km) |
| Pornic to Olbernhau | 741.28 mi (1,192.97 km) |
| Pornic to Olching | 628.20 mi (1,011.00 km) |
| Pornic to Oldenburg | 617.22 mi (993.31 km) |
| Pornic to Oldenburg in Holstein | 752.43 mi (1,210.91 km) |
| Pornic to Olfen | 531.19 mi (854.86 km) |
| Pornic to Olpe | 523.75 mi (842.89 km) |
| Pornic to Olsberg | 559.32 mi (900.14 km) |
| Pornic to Oranienburg | 783.33 mi (1,260.65 km) |
| Pornic to Ortenberg | 554.87 mi (892.98 km) |
| Pornic to Oschatz | 743.22 mi (1,196.09 km) |
