| Boulder to Hicksville (New York) | 1,661.22 mi (2,673.47 km) |
| Boulder to Hidalgo (Texas) | 1,042.65 mi (1,677.98 km) |
| Boulder to High Point (North Carolina) | 1,398.08 mi (2,249.99 km) |
| Boulder to Highland (California) | 772.44 mi (1,243.12 km) |
| Boulder to Highland (Illinois) | 834.95 mi (1,343.71 km) |
| Boulder to Highland (Indiana) | 935.10 mi (1,504.90 km) |
| Boulder to Highland (Utah) | 346.22 mi (557.18 km) |
| Boulder to Highland City (Florida) | 1,569.66 mi (2,526.13 km) |
| Boulder to Highland Park (Illinois) | 918.57 mi (1,478.29 km) |
| Boulder to Highland Park (New Jersey) | 1,617.19 mi (2,602.61 km) |
| Boulder to Highland Springs (Virginia) | 1,507.32 mi (2,425.80 km) |
| Boulder to Highland Village (Texas) | 659.90 mi (1,062.00 km) |
| Boulder to Highlands Ranch (Colorado) | 36.56 mi (58.84 km) |
| Boulder to Hillcrest (California) | 813.95 mi (1,309.93 km) |
| Boulder to Hillcrest Heights (Maryland) | 1,505.55 mi (2,422.94 km) |
