| Royston to Castrovillari | 1,144.48 mi (1,841.87 km) |
| Royston to Catania | 1,243.49 mi (2,001.20 km) |
| Royston to Catanzaro | 1,208.13 mi (1,944.30 km) |
| Royston to Cattolica | 809.79 mi (1,303.23 km) |
| Royston to Cava de' Tirreni | 1,048.21 mi (1,686.92 km) |
| Royston to Cavallino | 1,184.04 mi (1,905.53 km) |
| Royston to Cavarzere | 728.95 mi (1,173.14 km) |
| Royston to Cave | 931.62 mi (1,499.29 km) |
| Royston to Cavriago | 700.28 mi (1,126.99 km) |
| Royston to Cavriglia | 793.51 mi (1,277.02 km) |
| Royston to Cazzago San Martino | 638.03 mi (1,026.80 km) |
| Royston to Ceccano | 957.75 mi (1,541.36 km) |
| Royston to Cecina | 775.62 mi (1,248.24 km) |
| Royston to Cefalu | 1,181.77 mi (1,901.88 km) |
| Royston to Ceglie Messapico | 1,142.61 mi (1,838.85 km) |
