| Boulder to Grovetown (Georgia) | 1,349.76 mi (2,172.23 km) |
| Boulder to Guayama (Puerto Rico) | 2,780.04 mi (4,474.04 km) |
| Boulder to Guaynabo (Puerto Rico) | 2,761.22 mi (4,443.75 km) |
| Boulder to Gulf Shores (Alabama) | 1,195.10 mi (1,923.33 km) |
| Boulder to Gulfport (Florida) | 1,539.37 mi (2,477.38 km) |
| Boulder to Gulfport (Mississippi) | 1,125.68 mi (1,811.61 km) |
| Boulder to Gunbarrel (Colorado) | 5.04 mi (8.12 km) |
| Boulder to Gurnee (Illinois) | 912.89 mi (1,469.16 km) |
| Boulder to Guthrie (Oklahoma) | 514.38 mi (827.81 km) |
| Boulder to Guttenberg (New Jersey) | 1,636.07 mi (2,632.99 km) |
| Boulder to Guymon (Oklahoma) | 308.01 mi (495.70 km) |
| Boulder to Hacienda Heights (California) | 814.88 mi (1,311.42 km) |
| Boulder to Hackensack (New Jersey) | 1,632.96 mi (2,628.00 km) |
| Boulder to Hackettstown (New Jersey) | 1,592.99 mi (2,563.67 km) |
| Boulder to Hagerstown (Maryland) | 1,455.13 mi (2,341.80 km) |
