| Helena to Arcata (California) | 719.40 mi (1,157.77 km) |
| Helena to Archdale (North Carolina) | 1,805.87 mi (2,906.26 km) |
| Helena to Arden-Arcade (California) | 728.31 mi (1,172.09 km) |
| Helena to Ardmore (Oklahoma) | 1,157.33 mi (1,862.55 km) |
| Helena to Ardmore (Pennsylvania) | 1,883.71 mi (3,031.53 km) |
| Helena to Arecibo (Puerto Rico) | 3,211.75 mi (5,168.81 km) |
| Helena to Arkadelphia (Arkansas) | 1,311.97 mi (2,111.41 km) |
| Helena to Arkansas City (Kansas) | 1,010.77 mi (1,626.68 km) |
| Helena to Arlington (Tennessee) | 1,397.55 mi (2,249.14 km) |
| Helena to Arlington (Texas) | 1,240.55 mi (1,996.47 km) |
| Helena to Arlington (Virginia) | 1,833.62 mi (2,950.93 km) |
| Helena to Arlington (Washington) | 485.55 mi (781.42 km) |
| Helena to Arlington Heights (Illinois) | 1,222.46 mi (1,967.36 km) |
| Helena to Arnold (Maryland) | 1,856.84 mi (2,988.30 km) |
| Helena to Arnold (Missouri) | 1,232.87 mi (1,984.12 km) |
