| Grays to Hormigueros (Puerto Rico) | 4,278.71 mi (6,885.91 km) |
| Grays to Horn Lake (Mississippi) | 4,393.62 mi (7,070.85 km) |
| Grays to Hot Springs (Arkansas) | 4,534.15 mi (7,297.01 km) |
| Grays to Hot Springs Village (Arkansas) | 4,522.37 mi (7,278.05 km) |
| Grays to Houma (Louisiana) | 4,690.69 mi (7,548.94 km) |
| Grays to Houston (Texas) | 4,867.02 mi (7,832.72 km) |
| Grays to Howard (Wisconsin) | 3,859.42 mi (6,211.14 km) |
| Grays to Huber Heights (Ohio) | 3,923.83 mi (6,314.80 km) |
| Grays to Hudson (Florida) | 4,422.62 mi (7,117.52 km) |
| Grays to Hudson (Ohio) | 3,755.55 mi (6,043.98 km) |
| Grays to Hudson (Wisconsin) | 4,010.25 mi (6,453.87 km) |
| Grays to Hueytown (Alabama) | 4,348.61 mi (6,998.41 km) |
| Grays to Hugo (Minnesota) | 4,008.84 mi (6,451.60 km) |
| Grays to Humacao (Puerto Rico) | 4,222.70 mi (6,795.78 km) |
| Grays to Humble (Texas) | 4,851.45 mi (7,807.66 km) |
