| Minneapolis (Minnesota) to Longmont | 686.28 mi (1,104.46 km) |
| Dallas (Texas) to Longmont | 687.82 mi (1,106.94 km) |
| St. Louis (Missouri) to Longmont | 799.19 mi (1,286.18 km) |
| Riverside (California) to Longmont | 801.90 mi (1,290.53 km) |
| San Diego (California) to Longmont | 837.04 mi (1,347.09 km) |
| Los Angeles (California) to Longmont | 842.53 mi (1,355.93 km) |
| Houston (Texas) to Longmont | 902.58 mi (1,452.56 km) |
| Chicago (Illinois) to Longmont | 913.70 mi (1,470.46 km) |
| San Francisco (California) to Longmont | 945.02 mi (1,520.86 km) |
| Portland (Oregon) to Longmont | 960.64 mi (1,546.01 km) |
| Seattle (Washington) to Longmont | 996.98 mi (1,604.49 km) |
| Detroit (Michigan) to Longmont | 1,149.20 mi (1,849.47 km) |
| Atlanta (Georgia) to Longmont | 1,220.75 mi (1,964.61 km) |
| Washington (District of Columbia) to Longmont | 1,492.81 mi (2,402.44 km) |
| Baltimore (Maryland) to Longmont | 1,508.20 mi (2,427.22 km) |
| Tampa (Florida) to Longmont | 1,538.32 mi (2,475.69 km) |
| Philadelphia (Pennsylvania) to Longmont | 1,576.48 mi (2,537.10 km) |
| Brooklyn (New York) to Longmont | 1,630.55 mi (2,624.12 km) |
| New York (New York) to Longmont | 1,631.35 mi (2,625.41 km) |
| Queens (New York) to Longmont | 1,637.34 mi (2,635.04 km) |
| Miami (Florida) to Longmont | 1,741.98 mi (2,803.44 km) |
| Boston (Massachusetts) to Longmont | 1,761.61 mi (2,835.04 km) |
| Denver (Colorado) to Longmont | 30.51 mi (49.10 km) |
| Phoenix (Arizona) to Longmont | 597.02 mi (960.82 km) |
| Las Vegas (Nevada) to Longmont | 614.74 mi (989.32 km) |
