| Boulder to New Britain (Connecticut) | 1,690.59 mi (2,720.74 km) |
| Boulder to New Brunswick (New Jersey) | 1,616.47 mi (2,601.45 km) |
| Boulder to New Carrollton (Maryland) | 1,508.26 mi (2,427.31 km) |
| Boulder to New Cassel (New York) | 1,659.17 mi (2,670.17 km) |
| Boulder to New Castle (Indiana) | 1,050.63 mi (1,690.82 km) |
| Boulder to New Castle (Pennsylvania) | 1,305.65 mi (2,101.24 km) |
| Boulder to New City (New York) | 1,633.27 mi (2,628.49 km) |
| Boulder to New Franklin (Ohio) | 1,241.58 mi (1,998.14 km) |
| Boulder to New Haven (Connecticut) | 1,686.73 mi (2,714.53 km) |
| Boulder to New Haven (Indiana) | 1,062.44 mi (1,709.84 km) |
| Boulder to New Hope (Minnesota) | 695.36 mi (1,119.07 km) |
| Boulder to New Hyde Park (New York) | 1,653.20 mi (2,660.57 km) |
| Boulder to New Iberia (Louisiana) | 1,025.92 mi (1,651.06 km) |
| Boulder to New Kensington (Pennsylvania) | 1,339.60 mi (2,155.88 km) |
| Boulder to New Kingman-Butler (Arizona) | 580.65 mi (934.46 km) |
