| Olonne-sur-Mer to Oestrich-Winkel | 508.66 mi (818.61 km) |
| Olonne-sur-Mer to Offenburg | 471.91 mi (759.46 km) |
| Olonne-sur-Mer to Oftersheim | 517.21 mi (832.37 km) |
| Olonne-sur-Mer to Ohrdruf | 641.81 mi (1,032.89 km) |
| Olonne-sur-Mer to Ohringen | 553.33 mi (890.49 km) |
| Olonne-sur-Mer to Olbernhau | 745.18 mi (1,199.24 km) |
| Olonne-sur-Mer to Olching | 622.42 mi (1,001.70 km) |
| Olonne-sur-Mer to Oldenburg | 636.42 mi (1,024.23 km) |
| Olonne-sur-Mer to Oldenburg in Holstein | 771.30 mi (1,241.29 km) |
| Olonne-sur-Mer to Olfen | 546.55 mi (879.58 km) |
| Olonne-sur-Mer to Olpe | 535.18 mi (861.29 km) |
| Olonne-sur-Mer to Olsberg | 571.22 mi (919.29 km) |
| Olonne-sur-Mer to Oranienburg | 794.83 mi (1,279.15 km) |
| Olonne-sur-Mer to Ortenberg | 561.32 mi (903.36 km) |
| Olonne-sur-Mer to Oschatz | 749.69 mi (1,206.51 km) |
