| Boulder to Wanaque (New Jersey) | 1,618.88 mi (2,605.33 km) |
| Boulder to Wantagh (New York) | 1,662.96 mi (2,676.27 km) |
| Boulder to Warner Robins (Georgia) | 1,303.20 mi (2,097.30 km) |
| Boulder to Warr Acres (Oklahoma) | 519.60 mi (836.22 km) |
| Boulder to Warren (Michigan) | 1,163.49 mi (1,872.45 km) |
| Boulder to Warren (Ohio) | 1,279.78 mi (2,059.61 km) |
| Boulder to Warrensburg (Missouri) | 621.15 mi (999.65 km) |
| Boulder to Warrensville Heights (Ohio) | 1,242.38 mi (1,999.42 km) |
| Boulder to Warrenville (Illinois) | 898.07 mi (1,445.30 km) |
| Boulder to Warrington (Florida) | 1,209.44 mi (1,946.40 km) |
| Boulder to Warsaw (Indiana) | 1,018.87 mi (1,639.71 km) |
| Boulder to Warwick (Rhode Island) | 1,759.55 mi (2,831.72 km) |
| Boulder to Wasco (California) | 827.90 mi (1,332.37 km) |
| Boulder to Washington (District of Columbia) | 1,501.83 mi (2,416.96 km) |
| Boulder to Washington (Illinois) | 832.95 mi (1,340.51 km) |
