| Keystone to Busto Arsizio | 4,923.44 mi (7,923.52 km) |
| Keystone to Busto Garolfo | 4,926.63 mi (7,928.65 km) |
| Keystone to Cabras | 5,056.62 mi (8,137.85 km) |
| Keystone to Cadelbosco di Sopra | 5,024.28 mi (8,085.80 km) |
| Keystone to Cadoneghe | 5,065.59 mi (8,152.28 km) |
| Keystone to Cagli | 5,151.02 mi (8,289.77 km) |
| Keystone to Cagliari | 5,104.09 mi (8,214.24 km) |
| Keystone to Cairo Montenotte | 4,927.43 mi (7,929.92 km) |
| Keystone to Caivano | 5,303.73 mi (8,535.53 km) |
| Keystone to Calcinaia | 5,054.20 mi (8,133.94 km) |
| Keystone to Calcinato | 4,997.58 mi (8,042.82 km) |
| Keystone to Calderara di Reno | 5,059.84 mi (8,143.02 km) |
| Keystone to Caldogno | 5,041.98 mi (8,114.28 km) |
| Keystone to Calenzano | 5,074.42 mi (8,166.48 km) |
| Keystone to Calolziocorte | 4,944.76 mi (7,957.82 km) |
