| Gretz-Armainvilliers to Ciampino | 677.28 mi (1,089.98 km) |
| Gretz-Armainvilliers to Cicciano | 787.35 mi (1,267.11 km) |
| Gretz-Armainvilliers to Cingoli | 624.00 mi (1,004.23 km) |
| Gretz-Armainvilliers to Cinisello Balsamo | 375.84 mi (604.85 km) |
| Gretz-Armainvilliers to Cinisi | 894.95 mi (1,440.28 km) |
| Gretz-Armainvilliers to Cirie | 333.44 mi (536.63 km) |
| Gretz-Armainvilliers to Ciro Marina | 961.49 mi (1,547.37 km) |
| Gretz-Armainvilliers to Cislago | 362.07 mi (582.70 km) |
| Gretz-Armainvilliers to Cisterna di Latina | 695.91 mi (1,119.96 km) |
| Gretz-Armainvilliers to Cisternino | 906.55 mi (1,458.94 km) |
| Gretz-Armainvilliers to Citta di Castello | 582.92 mi (938.13 km) |
| Gretz-Armainvilliers to Citta Sant'Angelo | 694.39 mi (1,117.51 km) |
| Gretz-Armainvilliers to Cittadella | 475.09 mi (764.58 km) |
| Gretz-Armainvilliers to Cittanova | 978.20 mi (1,574.26 km) |
| Gretz-Armainvilliers to Cividale del Friuli | 531.86 mi (855.95 km) |
