| Keystone to Celano | 5,235.18 mi (8,425.21 km) |
| Keystone to Cento | 5,056.05 mi (8,136.93 km) |
| Keystone to Cepagatti | 5,250.43 mi (8,449.75 km) |
| Keystone to Ceprano | 5,249.11 mi (8,447.63 km) |
| Keystone to Cercola | 5,308.60 mi (8,543.36 km) |
| Keystone to Cerea | 5,040.40 mi (8,111.74 km) |
| Keystone to Cerese | 5,023.48 mi (8,084.50 km) |
| Keystone to Cerignola | 5,368.65 mi (8,640.01 km) |
| Keystone to Cermenate | 4,931.62 mi (7,936.68 km) |
| Keystone to Cernusco sul Naviglio | 4,947.52 mi (7,962.27 km) |
| Keystone to Cerreto Guidi | 5,064.17 mi (8,150.00 km) |
| Keystone to Cerro Maggiore | 4,928.16 mi (7,931.11 km) |
| Keystone to Certaldo | 5,077.40 mi (8,171.28 km) |
| Keystone to Cerveteri | 5,169.81 mi (8,320.00 km) |
| Keystone to Cervia | 5,117.62 mi (8,236.01 km) |
