| Mount Washington to Castelletto sopra Ticino | 4,584.93 mi (7,378.73 km) |
| Mount Washington to Castelli Calepio | 4,640.15 mi (7,467.61 km) |
| Mount Washington to Castelnovo ne' Monti | 4,704.86 mi (7,571.74 km) |
| Mount Washington to Castelnuovo Berardenga | 4,791.77 mi (7,711.61 km) |
| Mount Washington to Castelnuovo di Porto | 4,880.43 mi (7,854.29 km) |
| Mount Washington to Castelnuovo di Verona | 4,683.05 mi (7,536.65 km) |
| Mount Washington to Castelnuovo Rangone | 4,722.68 mi (7,600.42 km) |
| Mount Washington to Castelvetrano | 5,069.24 mi (8,158.16 km) |
| Mount Washington to Castelvetro di Modena | 4,725.24 mi (7,604.54 km) |
| Mount Washington to Castenaso | 4,746.43 mi (7,638.64 km) |
| Mount Washington to Castenedolo | 4,662.40 mi (7,503.40 km) |
| Mount Washington to Castiglion Fiorentino | 4,809.28 mi (7,739.79 km) |
| Mount Washington to Castiglione del Lago | 4,822.54 mi (7,761.13 km) |
| Mount Washington to Castiglione delle Stiviere | 4,673.33 mi (7,521.00 km) |
| Mount Washington to Castrolibero | 5,151.18 mi (8,290.02 km) |
