| Riom to Ciampino | 550.36 mi (885.72 km) |
| Riom to Cicciano | 665.59 mi (1,071.17 km) |
| Riom to Cingoli | 526.17 mi (846.78 km) |
| Riom to Cinisello Balsamo | 295.33 mi (475.29 km) |
| Riom to Cinisi | 738.98 mi (1,189.27 km) |
| Riom to Cirie | 221.77 mi (356.90 km) |
| Riom to Ciro Marina | 841.24 mi (1,353.84 km) |
| Riom to Cislago | 282.57 mi (454.76 km) |
| Riom to Cisterna di Latina | 568.25 mi (914.51 km) |
| Riom to Cisternino | 801.81 mi (1,290.38 km) |
| Riom to Citta di Castello | 478.74 mi (770.46 km) |
| Riom to Citta Sant'Angelo | 589.19 mi (948.21 km) |
| Riom to Cittadella | 418.01 mi (672.72 km) |
| Riom to Cittanova | 842.89 mi (1,356.50 km) |
| Riom to Cividale del Friuli | 495.25 mi (797.02 km) |
