| Onex to Busto Arsizio | 138.07 mi (222.21 km) |
| Onex to Busto Garolfo | 141.07 mi (227.04 km) |
| Onex to Cabras | 448.90 mi (722.44 km) |
| Onex to Cadelbosco di Sopra | 238.94 mi (384.54 km) |
| Onex to Cadoneghe | 285.37 mi (459.25 km) |
| Onex to Cagli | 368.59 mi (593.19 km) |
| Onex to Cagliari | 504.21 mi (811.44 km) |
| Onex to Cairo Montenotte | 162.08 mi (260.84 km) |
| Onex to Caivano | 546.53 mi (879.56 km) |
| Onex to Calcinaia | 280.36 mi (451.20 km) |
| Onex to Calcinato | 213.68 mi (343.89 km) |
| Onex to Calderara di Reno | 274.45 mi (441.68 km) |
| Onex to Caldogno | 262.48 mi (422.41 km) |
| Onex to Calenzano | 294.60 mi (474.11 km) |
| Onex to Calolziocorte | 162.17 mi (260.99 km) |
