| Helena to Altus (Oklahoma) | 1,057.90 mi (1,702.53 km) |
| Helena to Alum Rock (California) | 811.06 mi (1,305.27 km) |
| Helena to Alvin (Texas) | 1,491.10 mi (2,399.69 km) |
| Helena to Amarillo (Texas) | 948.68 mi (1,526.75 km) |
| Helena to Amelia (Ohio) | 1,493.43 mi (2,403.45 km) |
| Helena to American Canyon (California) | 780.47 mi (1,256.04 km) |
| Helena to American Fork (Utah) | 429.78 mi (691.67 km) |
| Helena to Americus (Georgia) | 1,777.62 mi (2,860.80 km) |
| Helena to Ames (Iowa) | 960.20 mi (1,545.30 km) |
| Helena to Amherst (Ohio) | 1,513.70 mi (2,436.06 km) |
| Helena to Ammon (Idaho) | 215.73 mi (347.19 km) |
| Helena to Amsterdam (New York) | 1,854.62 mi (2,984.72 km) |
| Helena to Anacortes (Washington) | 511.31 mi (822.87 km) |
| Helena to Anaheim (California) | 933.03 mi (1,501.56 km) |
| Helena to Anchorage (Alaska) | 1,777.87 mi (2,861.21 km) |
