| Blackrock to Hormigueros (Puerto Rico) | 4,028.01 mi (6,482.46 km) |
| Blackrock to Horn Lake (Mississippi) | 4,092.30 mi (6,585.91 km) |
| Blackrock to Hot Springs (Arkansas) | 4,232.41 mi (6,811.41 km) |
| Blackrock to Hot Springs Village (Arkansas) | 4,220.62 mi (6,792.43 km) |
| Blackrock to Houma (Louisiana) | 4,391.16 mi (7,066.88 km) |
| Blackrock to Houston (Texas) | 4,565.76 mi (7,347.88 km) |
| Blackrock to Howard (Wisconsin) | 3,558.08 mi (5,726.17 km) |
| Blackrock to Huber Heights (Ohio) | 3,622.43 mi (5,829.74 km) |
| Blackrock to Hudson (Florida) | 4,129.52 mi (6,645.81 km) |
| Blackrock to Hudson (Ohio) | 3,454.27 mi (5,559.11 km) |
| Blackrock to Hudson (Wisconsin) | 3,710.30 mi (5,971.15 km) |
| Blackrock to Hueytown (Alabama) | 4,048.85 mi (6,515.99 km) |
| Blackrock to Hugo (Minnesota) | 3,709.09 mi (5,969.20 km) |
| Blackrock to Humacao (Puerto Rico) | 3,975.29 mi (6,397.61 km) |
| Blackrock to Humble (Texas) | 4,550.17 mi (7,322.79 km) |
