| Harrow to Castrovillari | 1,134.43 mi (1,825.69 km) |
| Harrow to Catania | 1,229.49 mi (1,978.67 km) |
| Harrow to Catanzaro | 1,197.46 mi (1,927.13 km) |
| Harrow to Cattolica | 801.51 mi (1,289.91 km) |
| Harrow to Cava de' Tirreni | 1,037.37 mi (1,669.49 km) |
| Harrow to Cavallino | 1,177.05 mi (1,894.28 km) |
| Harrow to Cavarzere | 722.20 mi (1,162.27 km) |
| Harrow to Cave | 919.90 mi (1,480.44 km) |
| Harrow to Cavriago | 689.90 mi (1,110.29 km) |
| Harrow to Cavriglia | 782.37 mi (1,259.10 km) |
| Harrow to Cazzago San Martino | 628.80 mi (1,011.95 km) |
| Harrow to Ceccano | 946.25 mi (1,522.85 km) |
| Harrow to Cecina | 762.50 mi (1,227.13 km) |
| Harrow to Cefalu | 1,166.95 mi (1,878.03 km) |
| Harrow to Ceglie Messapico | 1,135.25 mi (1,827.00 km) |
