| Helena to Castelletto sopra Ticino | 5,113.39 mi (8,229.21 km) |
| Helena to Castelli Calepio | 5,155.26 mi (8,296.59 km) |
| Helena to Castelnovo ne' Monti | 5,236.17 mi (8,426.81 km) |
| Helena to Castelnuovo Berardenga | 5,329.19 mi (8,576.51 km) |
| Helena to Castelnuovo di Porto | 5,426.81 mi (8,733.60 km) |
| Helena to Castelnuovo di Verona | 5,191.52 mi (8,354.95 km) |
| Helena to Castelnuovo Rangone | 5,245.38 mi (8,441.62 km) |
| Helena to Castelvetrano | 5,687.64 mi (9,153.37 km) |
| Helena to Castelvetro di Modena | 5,248.65 mi (8,446.88 km) |
| Helena to Castenaso | 5,263.30 mi (8,470.46 km) |
| Helena to Castenedolo | 5,175.81 mi (8,329.66 km) |
| Helena to Castiglion Fiorentino | 5,341.59 mi (8,596.47 km) |
| Helena to Castiglione del Lago | 5,356.90 mi (8,621.10 km) |
| Helena to Castiglione delle Stiviere | 5,185.62 mi (8,345.45 km) |
| Helena to Castrolibero | 5,696.55 mi (9,167.71 km) |
