| Boulder to Largo (Florida) | 1,529.38 mi (2,461.30 km) |
| Boulder to Largo (Maryland) | 1,512.04 mi (2,433.39 km) |
| Boulder to Larkspur (California) | 937.62 mi (1,508.95 km) |
| Boulder to Las Cruces (New Mexico) | 538.74 mi (867.01 km) |
| Boulder to Las Vegas (Nevada) | 603.49 mi (971.22 km) |
| Boulder to Las Vegas (New Mexico) | 305.65 mi (491.90 km) |
| Boulder to Latham (New York) | 1,634.30 mi (2,630.15 km) |
| Boulder to Lathrop (California) | 875.61 mi (1,409.16 km) |
| Boulder to Lauderdale Lakes (Florida) | 1,727.89 mi (2,780.77 km) |
| Boulder to Lauderhill (Florida) | 1,727.17 mi (2,779.60 km) |
| Boulder to Laurel (Florida) | 1,577.76 mi (2,539.15 km) |
| Boulder to Laurel (Maryland) | 1,507.25 mi (2,425.69 km) |
| Boulder to Laurel (Mississippi) | 1,067.33 mi (1,717.71 km) |
| Boulder to Laurel (Virginia) | 1,496.38 mi (2,408.20 km) |
| Boulder to Laurinburg (North Carolina) | 1,455.27 mi (2,342.03 km) |
