| Helena to Channelview (Texas) | 1,473.52 mi (2,371.40 km) |
| Helena to Chantilly (Virginia) | 1,817.06 mi (2,924.27 km) |
| Helena to Chaparral (New Mexico) | 1,048.58 mi (1,687.53 km) |
| Helena to Chapel Hill (North Carolina) | 1,847.66 mi (2,973.52 km) |
| Helena to Charleston (Illinois) | 1,294.04 mi (2,082.55 km) |
| Helena to Charleston (South Carolina) | 1,932.52 mi (3,110.09 km) |
| Helena to Charleston (West Virginia) | 1,637.89 mi (2,635.93 km) |
| Helena to Charlotte (North Carolina) | 1,793.11 mi (2,885.74 km) |
| Helena to Charlottesville (Virginia) | 1,796.53 mi (2,891.23 km) |
| Helena to Chaska (Minnesota) | 894.72 mi (1,439.91 km) |
| Helena to Chatham (Illinois) | 1,217.76 mi (1,959.80 km) |
| Helena to Chattanooga (Tennessee) | 1,598.98 mi (2,573.32 km) |
| Helena to Cheat Lake (West Virginia) | 1,677.84 mi (2,700.23 km) |
| Helena to Chelsea (Alabama) | 1,615.92 mi (2,600.57 km) |
| Helena to Chelsea (Massachusetts) | 2,017.60 mi (3,247.01 km) |
