| Helena to Carterton | 4,492.99 mi (7,230.77 km) |
| Helena to Castle Bromwich | 4,450.96 mi (7,163.13 km) |
| Helena to Castleford | 4,405.29 mi (7,089.62 km) |
| Helena to Castleton | 4,387.21 mi (7,060.53 km) |
| Helena to Caterham | 4,562.18 mi (7,342.12 km) |
| Helena to Catford | 4,555.85 mi (7,331.93 km) |
| Helena to Caversham | 4,526.03 mi (7,283.94 km) |
| Helena to Chaddesden | 4,440.80 mi (7,146.77 km) |
| Helena to Chalfont Saint Peter | 4,531.76 mi (7,293.16 km) |
| Helena to Chandlers Ford | 4,537.29 mi (7,302.07 km) |
| Helena to Chapel en le Frith | 4,407.69 mi (7,093.49 km) |
| Helena to Chapeltown | 4,414.29 mi (7,104.12 km) |
| Helena to Chard | 4,493.78 mi (7,232.05 km) |
| Helena to Charlton Kings | 4,473.07 mi (7,198.71 km) |
| Helena to Chatham | 4,575.79 mi (7,364.03 km) |
