| Seregno to Octeville | 573.97 mi (923.72 km) |
| Seregno to Oignies | 439.02 mi (706.54 km) |
| Seregno to Oissel | 456.07 mi (733.97 km) |
| Seregno to Olivet | 377.67 mi (607.80 km) |
| Seregno to Ollioules | 239.74 mi (385.82 km) |
| Seregno to Olonne-sur-Mer | 528.88 mi (851.15 km) |
| Seregno to Oloron-Sainte-Marie | 512.40 mi (824.63 km) |
| Seregno to Onet Village | 334.59 mi (538.47 km) |
| Seregno to Onnaing | 417.10 mi (671.26 km) |
| Seregno to Orange | 238.88 mi (384.45 km) |
| Seregno to Orchies | 431.87 mi (695.03 km) |
| Seregno to Orleans | 378.28 mi (608.78 km) |
| Seregno to Orly | 384.26 mi (618.40 km) |
| Seregno to Ormesson-sur-Marne | 380.14 mi (611.78 km) |
| Seregno to Orsay | 390.70 mi (628.77 km) |
