| Clayton to Castrovillari | 1,279.81 mi (2,059.65 km) |
| Clayton to Catania | 1,382.47 mi (2,224.87 km) |
| Clayton to Catanzaro | 1,344.08 mi (2,163.09 km) |
| Clayton to Cattolica | 943.56 mi (1,518.51 km) |
| Clayton to Cava de' Tirreni | 1,184.49 mi (1,906.25 km) |
| Clayton to Cavallino | 1,315.36 mi (2,116.87 km) |
| Clayton to Cavarzere | 861.00 mi (1,385.64 km) |
| Clayton to Cave | 1,068.91 mi (1,720.24 km) |
| Clayton to Cavriago | 836.66 mi (1,346.48 km) |
| Clayton to Cavriglia | 930.44 mi (1,497.40 km) |
| Clayton to Cazzago San Martino | 773.37 mi (1,244.63 km) |
| Clayton to Ceccano | 1,094.82 mi (1,761.93 km) |
| Clayton to Cecina | 914.28 mi (1,471.40 km) |
| Clayton to Cefalu | 1,321.35 mi (2,126.50 km) |
| Clayton to Ceglie Messapico | 1,274.51 mi (2,051.13 km) |
