| Helena to Cold Springs (Nevada) | 622.60 mi (1,001.97 km) |
| Helena to Coldwater (Michigan) | 1,367.60 mi (2,200.94 km) |
| Helena to Colesville (Maryland) | 1,832.03 mi (2,948.37 km) |
| Helena to College (Alaska) | 1,835.39 mi (2,953.78 km) |
| Helena to College Park (Georgia) | 1,695.97 mi (2,729.40 km) |
| Helena to College Park (Maryland) | 1,837.72 mi (2,957.52 km) |
| Helena to College Station (Texas) | 1,389.05 mi (2,235.46 km) |
| Helena to Collegedale (Tennessee) | 1,608.44 mi (2,588.53 km) |
| Helena to Colleyville (Texas) | 1,228.94 mi (1,977.79 km) |
| Helena to Collierville (Tennessee) | 1,405.90 mi (2,262.57 km) |
| Helena to Collinsville (Illinois) | 1,239.88 mi (1,995.39 km) |
| Helena to Colonia (New Jersey) | 1,912.55 mi (3,077.96 km) |
| Helena to Colonial Heights (Virginia) | 1,874.95 mi (3,017.44 km) |
| Helena to Colonial Park (Pennsylvania) | 1,802.98 mi (2,901.61 km) |
| Helena to Colorado Springs (Colorado) | 648.17 mi (1,043.12 km) |
