| Riom to Castelli Calepio | 327.56 mi (527.16 km) |
| Riom to Castelnovo ne' Monti | 368.93 mi (593.73 km) |
| Riom to Castelnuovo Berardenga | 448.35 mi (721.54 km) |
| Riom to Castelnuovo di Porto | 533.44 mi (858.49 km) |
| Riom to Castelnuovo di Verona | 370.82 mi (596.78 km) |
| Riom to Castelnuovo Rangone | 391.59 mi (630.21 km) |
| Riom to Castelvetrano | 754.19 mi (1,213.76 km) |
| Riom to Castelvetro di Modena | 393.37 mi (633.07 km) |
| Riom to Castenaso | 417.77 mi (672.34 km) |
| Riom to Castenedolo | 347.90 mi (559.89 km) |
| Riom to Castiglion Fiorentino | 467.23 mi (751.94 km) |
| Riom to Castiglione del Lago | 479.26 mi (771.29 km) |
| Riom to Castiglione delle Stiviere | 358.32 mi (576.67 km) |
| Riom to Castrolibero | 804.28 mi (1,294.37 km) |
| Riom to Castrovillari | 783.17 mi (1,260.39 km) |
