| Frederick to Harrison (Wisconsin) | 648.87 mi (1,044.26 km) |
| Frederick to Harrisonburg (Virginia) | 104.41 mi (168.03 km) |
| Frederick to Hartford (Connecticut) | 295.84 mi (476.10 km) |
| Frederick to Hartford (Wisconsin) | 628.07 mi (1,010.78 km) |
| Frederick to Hartselle (Alabama) | 628.59 mi (1,011.62 km) |
| Frederick to Hartsville (Tennessee) | 520.55 mi (837.74 km) |
| Frederick to Harvey (Illinois) | 557.92 mi (897.88 km) |
| Frederick to Harvey (Louisiana) | 973.90 mi (1,567.34 km) |
| Frederick to Hasbrouck Heights (New Jersey) | 202.10 mi (325.25 km) |
| Frederick to Haslett (Michigan) | 429.87 mi (691.82 km) |
| Frederick to Hastings (Minnesota) | 870.41 mi (1,400.78 km) |
| Frederick to Hastings (Nebraska) | 1,110.25 mi (1,786.77 km) |
| Frederick to Hattiesburg (Mississippi) | 873.23 mi (1,405.33 km) |
| Frederick to Hauppauge (New York) | 241.83 mi (389.18 km) |
| Frederick to Havelock (North Carolina) | 313.99 mi (505.32 km) |
