| Riom to Castelfiorentino | 416.49 mi (670.28 km) |
| Riom to Castelfranco di Sopra | 442.78 mi (712.59 km) |
| Riom to Castelfranco di Sotto | 403.76 mi (649.79 km) |
| Riom to Castelfranco Emilia | 396.34 mi (637.85 km) |
| Riom to Castelfranco Veneto | 425.12 mi (684.16 km) |
| Riom to Castellabate | 711.22 mi (1,144.60 km) |
| Riom to Castellammare del Golfo | 738.72 mi (1,188.86 km) |
| Riom to Castellammare di Stabia | 674.18 mi (1,084.99 km) |
| Riom to Castellamonte | 224.97 mi (362.05 km) |
| Riom to Castellana Grotte | 784.52 mi (1,262.56 km) |
| Riom to Castellaneta | 783.14 mi (1,260.35 km) |
| Riom to Castellanza | 279.60 mi (449.97 km) |
| Riom to Castellarano | 384.18 mi (618.28 km) |
| Riom to Castelleone | 323.97 mi (521.38 km) |
| Riom to Castelletto sopra Ticino | 266.14 mi (428.31 km) |
