| Busto Arsizio to Octeville | 561.28 mi (903.30 km) |
| Busto Arsizio to Oignies | 430.84 mi (693.37 km) |
| Busto Arsizio to Oissel | 444.33 mi (715.08 km) |
| Busto Arsizio to Olivet | 363.89 mi (585.63 km) |
| Busto Arsizio to Ollioules | 226.26 mi (364.13 km) |
| Busto Arsizio to Olonne-sur-Mer | 512.85 mi (825.35 km) |
| Busto Arsizio to Oloron-Sainte-Marie | 495.51 mi (797.45 km) |
| Busto Arsizio to Onet Village | 317.61 mi (511.14 km) |
| Busto Arsizio to Onnaing | 409.51 mi (659.04 km) |
| Busto Arsizio to Orange | 222.53 mi (358.13 km) |
| Busto Arsizio to Orchies | 423.98 mi (682.34 km) |
| Busto Arsizio to Orleans | 364.58 mi (586.73 km) |
| Busto Arsizio to Orly | 372.41 mi (599.33 km) |
| Busto Arsizio to Ormesson-sur-Marne | 368.49 mi (593.03 km) |
| Busto Arsizio to Orsay | 378.61 mi (609.31 km) |
