| Irondale to Horizon West (Florida) | 462.02 mi (743.55 km) |
| Irondale to Hormigueros (Puerto Rico) | 1,609.56 mi (2,590.34 km) |
| Irondale to Horn Lake (Mississippi) | 216.62 mi (348.61 km) |
| Irondale to Hot Springs (Arkansas) | 371.64 mi (598.10 km) |
| Irondale to Hot Springs Village (Arkansas) | 368.69 mi (593.35 km) |
| Irondale to Houma (Louisiana) | 362.87 mi (583.98 km) |
| Irondale to Houston (Texas) | 574.90 mi (925.22 km) |
| Irondale to Howard (Wisconsin) | 765.68 mi (1,232.24 km) |
| Irondale to Huber Heights (Ohio) | 458.56 mi (737.98 km) |
| Irondale to Hudson (Florida) | 428.49 mi (689.58 km) |
| Irondale to Hudson (Ohio) | 603.73 mi (971.61 km) |
| Irondale to Hudson (Wisconsin) | 852.64 mi (1,372.19 km) |
| Irondale to Hueytown (Alabama) | 22.42 mi (36.08 km) |
| Irondale to Hugo (Minnesota) | 870.03 mi (1,400.17 km) |
| Irondale to Humacao (Puerto Rico) | 1,670.14 mi (2,687.83 km) |
