| Lachen to Octeville | 509.53 mi (820.02 km) |
| Lachen to Oignies | 349.83 mi (562.99 km) |
| Lachen to Oissel | 386.55 mi (622.09 km) |
| Lachen to Olivet | 327.52 mi (527.09 km) |
| Lachen to Ollioules | 315.33 mi (507.48 km) |
| Lachen to Olonne-sur-Mer | 503.47 mi (810.26 km) |
| Lachen to Oloron-Sainte-Marie | 536.13 mi (862.82 km) |
| Lachen to Onet Village | 358.73 mi (577.31 km) |
| Lachen to Onnaing | 325.71 mi (524.19 km) |
| Lachen to Orange | 286.85 mi (461.64 km) |
| Lachen to Orchies | 341.49 mi (549.57 km) |
| Lachen to Orleans | 327.41 mi (526.91 km) |
| Lachen to Orly | 317.48 mi (510.94 km) |
| Lachen to Ormesson-sur-Marne | 312.07 mi (502.23 km) |
| Lachen to Orsay | 325.52 mi (523.88 km) |
