| Riom to Civita Castellana | 523.59 mi (842.63 km) |
| Riom to Civitanova Marche | 551.89 mi (888.18 km) |
| Riom to Civitavecchia | 504.71 mi (812.25 km) |
| Riom to Civitella in Val di Chiana | 455.91 mi (733.71 km) |
| Riom to Clusone | 328.74 mi (529.05 km) |
| Riom to Coccaglio | 331.83 mi (534.03 km) |
| Riom to Codigoro | 442.96 mi (712.87 km) |
| Riom to Codogno | 323.01 mi (519.84 km) |
| Riom to Codroipo | 473.90 mi (762.67 km) |
| Riom to Cogoleto | 288.94 mi (465.00 km) |
| Riom to Colle di Val d'Elsa | 430.02 mi (692.05 km) |
| Riom to Colle Salvetti | 394.69 mi (635.19 km) |
| Riom to Collecchio | 353.93 mi (569.59 km) |
| Riom to Colleferro | 570.76 mi (918.55 km) |
| Riom to Collegno | 223.24 mi (359.28 km) |
