| Boulder to North Augusta (South Carolina) | 1,360.66 mi (2,189.77 km) |
| Boulder to North Aurora (Illinois) | 890.02 mi (1,432.35 km) |
| Boulder to North Babylon (New York) | 1,671.89 mi (2,690.65 km) |
| Boulder to North Bay Shore (New York) | 1,674.85 mi (2,695.41 km) |
| Boulder to North Bellmore (New York) | 1,661.24 mi (2,673.51 km) |
| Boulder to North Bellport (New York) | 1,690.90 mi (2,721.24 km) |
| Boulder to North Bend (Oregon) | 1,004.20 mi (1,616.10 km) |
| Boulder to North Bethesda (Maryland) | 1,494.52 mi (2,405.20 km) |
| Boulder to North Branch (Minnesota) | 728.56 mi (1,172.51 km) |
| Boulder to North Canton (Ohio) | 1,251.77 mi (2,014.52 km) |
| Boulder to North Charleston (South Carolina) | 1,477.03 mi (2,377.05 km) |
| Boulder to North Chicago (Illinois) | 916.68 mi (1,475.25 km) |
| Boulder to North Decatur (Georgia) | 1,231.52 mi (1,981.93 km) |
| Boulder to North Druid Hills (Georgia) | 1,229.30 mi (1,978.36 km) |
| Boulder to North Fair Oaks (California) | 928.72 mi (1,494.64 km) |
