| Keystone to Castelletto sopra Ticino | 4,910.98 mi (7,903.46 km) |
| Keystone to Castelli Calepio | 4,969.95 mi (7,998.35 km) |
| Keystone to Castelnovo ne' Monti | 5,024.12 mi (8,085.53 km) |
| Keystone to Castelnuovo Berardenga | 5,104.23 mi (8,214.47 km) |
| Keystone to Castelnuovo di Porto | 5,184.66 mi (8,343.90 km) |
| Keystone to Castelnuovo di Verona | 5,014.00 mi (8,069.25 km) |
| Keystone to Castelnuovo Rangone | 5,045.20 mi (8,119.46 km) |
| Keystone to Castelvetrano | 5,329.62 mi (8,577.20 km) |
| Keystone to Castelvetro di Modena | 5,047.31 mi (8,122.85 km) |
| Keystone to Castenaso | 5,070.62 mi (8,160.37 km) |
| Keystone to Castenedolo | 4,991.97 mi (8,033.80 km) |
| Keystone to Castiglion Fiorentino | 5,123.38 mi (8,245.29 km) |
| Keystone to Castiglione del Lago | 5,135.08 mi (8,264.12 km) |
| Keystone to Castiglione delle Stiviere | 5,002.94 mi (8,051.45 km) |
| Keystone to Castrolibero | 5,444.03 mi (8,761.31 km) |
