| Riom to Busto Garolfo | 279.50 mi (449.81 km) |
| Riom to Cabras | 494.54 mi (795.88 km) |
| Riom to Cadelbosco di Sopra | 371.79 mi (598.33 km) |
| Riom to Cadoneghe | 426.75 mi (686.79 km) |
| Riom to Cagli | 495.06 mi (796.72 km) |
| Riom to Cagliari | 552.18 mi (888.65 km) |
| Riom to Cairo Montenotte | 271.48 mi (436.90 km) |
| Riom to Caivano | 656.26 mi (1,056.15 km) |
| Riom to Calcinaia | 398.21 mi (640.85 km) |
| Riom to Calcinato | 353.68 mi (569.19 km) |
| Riom to Calderara di Reno | 407.04 mi (655.06 km) |
| Riom to Caldogno | 404.46 mi (650.91 km) |
| Riom to Calenzano | 418.22 mi (673.06 km) |
| Riom to Calolziocorte | 304.20 mi (489.57 km) |
| Riom to Caltagirone | 838.02 mi (1,348.66 km) |
