| Royan to Ciampino | 729.62 mi (1,174.21 km) |
| Royan to Cicciano | 845.03 mi (1,359.94 km) |
| Royan to Cingoli | 718.84 mi (1,156.85 km) |
| Royan to Cinisello Balsamo | 495.79 mi (797.89 km) |
| Royan to Cinisi | 889.25 mi (1,431.11 km) |
| Royan to Cirie | 419.76 mi (675.54 km) |
| Royan to Ciro Marina | 1,018.50 mi (1,639.11 km) |
| Royan to Cislago | 483.27 mi (777.74 km) |
| Royan to Cisterna di Latina | 746.57 mi (1,201.49 km) |
| Royan to Cisternino | 987.59 mi (1,589.37 km) |
| Royan to Citta di Castello | 670.31 mi (1,078.76 km) |
| Royan to Citta Sant'Angelo | 778.05 mi (1,252.16 km) |
| Royan to Cittadella | 618.99 mi (996.17 km) |
| Royan to Cittanova | 1,009.95 mi (1,625.36 km) |
| Royan to Cividale del Friuli | 696.36 mi (1,120.69 km) |
