| Helena to Chicago Ridge (Illinois) | 1,242.83 mi (2,000.14 km) |
| Helena to Chickasha (Oklahoma) | 1,082.50 mi (1,742.12 km) |
| Helena to Chico (California) | 682.31 mi (1,098.07 km) |
| Helena to Chicopee (Massachusetts) | 1,950.77 mi (3,139.46 km) |
| Helena to Chillicothe (Ohio) | 1,540.47 mi (2,479.14 km) |
| Helena to Chillum (Maryland) | 1,836.52 mi (2,955.60 km) |
| Helena to Chino (California) | 920.22 mi (1,480.96 km) |
| Helena to Chino Hills (California) | 923.40 mi (1,486.07 km) |
| Helena to Chino Valley (Arizona) | 818.12 mi (1,316.64 km) |
| Helena to Chippewa Falls (Wisconsin) | 998.04 mi (1,606.19 km) |
| Helena to Choctaw (Oklahoma) | 1,083.33 mi (1,743.45 km) |
| Helena to Chowchilla (California) | 779.02 mi (1,253.71 km) |
| Helena to Christiansburg (Virginia) | 1,738.50 mi (2,797.84 km) |
| Helena to Chubbuck (Idaho) | 254.51 mi (409.60 km) |
| Helena to Chula Vista (California) | 1,000.52 mi (1,610.18 km) |
