| Boulder to Grand Prairie (Texas) | 682.61 mi (1,098.55 km) |
| Boulder to Grand Rapids (Michigan) | 1,031.76 mi (1,660.46 km) |
| Boulder to Grand Rapids (Minnesota) | 767.87 mi (1,235.77 km) |
| Boulder to Grand Terrace (California) | 782.56 mi (1,259.40 km) |
| Boulder to Grandview (Missouri) | 577.51 mi (929.41 km) |
| Boulder to Grandview (Washington) | 852.91 mi (1,372.62 km) |
| Boulder to Grandville (Michigan) | 1,026.37 mi (1,651.78 km) |
| Boulder to Granger (Indiana) | 1,003.57 mi (1,615.10 km) |
| Boulder to Granite Bay (California) | 853.35 mi (1,373.33 km) |
| Boulder to Granite City (Illinois) | 811.78 mi (1,306.43 km) |
| Boulder to Grants Pass (Oregon) | 952.19 mi (1,532.40 km) |
| Boulder to Grantsville (Utah) | 382.69 mi (615.89 km) |
| Boulder to Grapevine (Texas) | 667.55 mi (1,074.31 km) |
| Boulder to Grass Valley (California) | 841.56 mi (1,354.35 km) |
| Boulder to Grayslake (Illinois) | 907.92 mi (1,461.15 km) |
