| Royston to Cividale del Friuli | 732.81 mi (1,179.34 km) |
| Royston to Civita Castellana | 889.03 mi (1,430.75 km) |
| Royston to Civitanova Marche | 877.46 mi (1,412.14 km) |
| Royston to Civitavecchia | 881.85 mi (1,419.20 km) |
| Royston to Civitella in Val di Chiana | 806.17 mi (1,297.40 km) |
| Royston to Clusone | 620.19 mi (998.10 km) |
| Royston to Coccaglio | 637.44 mi (1,025.86 km) |
| Royston to Codigoro | 745.18 mi (1,199.25 km) |
| Royston to Codogno | 649.96 mi (1,046.01 km) |
| Royston to Codroipo | 722.10 mi (1,162.10 km) |
| Royston to Cogoleto | 661.68 mi (1,064.87 km) |
| Royston to Colle di Val d'Elsa | 789.22 mi (1,270.13 km) |
| Royston to Colle Salvetti | 758.74 mi (1,221.08 km) |
| Royston to Collecchio | 687.73 mi (1,106.79 km) |
| Royston to Colleferro | 938.80 mi (1,510.86 km) |
