| Helena to Grand Junction (Colorado) | 547.36 mi (880.89 km) |
| Helena to Grand Prairie (Texas) | 1,244.75 mi (2,003.23 km) |
| Helena to Grand Rapids (Michigan) | 1,310.71 mi (2,109.39 km) |
| Helena to Grand Rapids (Minnesota) | 871.59 mi (1,402.68 km) |
| Helena to Grand Terrace (California) | 911.31 mi (1,466.61 km) |
| Helena to Grandview (Missouri) | 1,032.27 mi (1,661.28 km) |
| Helena to Grandview (Washington) | 376.38 mi (605.73 km) |
| Helena to Grandville (Michigan) | 1,307.43 mi (2,104.10 km) |
| Helena to Granger (Indiana) | 1,319.52 mi (2,123.56 km) |
| Helena to Granite Bay (California) | 712.62 mi (1,146.85 km) |
| Helena to Granite City (Illinois) | 1,232.45 mi (1,983.44 km) |
| Helena to Grants Pass (Oregon) | 626.33 mi (1,007.99 km) |
| Helena to Grantsville (Utah) | 413.93 mi (666.15 km) |
| Helena to Grapevine (Texas) | 1,229.01 mi (1,977.91 km) |
| Helena to Grass Valley (California) | 683.50 mi (1,099.98 km) |
