| Alton to Hormigueros (Puerto Rico) | 4,220.12 mi (6,791.62 km) |
| Alton to Horn Lake (Mississippi) | 4,350.76 mi (7,001.87 km) |
| Alton to Hot Springs (Arkansas) | 4,492.52 mi (7,230.01 km) |
| Alton to Hot Springs Village (Arkansas) | 4,480.79 mi (7,211.14 km) |
| Alton to Houma (Louisiana) | 4,645.20 mi (7,475.72 km) |
| Alton to Houston (Texas) | 4,823.99 mi (7,763.46 km) |
| Alton to Howard (Wisconsin) | 3,822.08 mi (6,151.04 km) |
| Alton to Huber Heights (Ohio) | 3,881.22 mi (6,246.22 km) |
| Alton to Hudson (Florida) | 4,372.84 mi (7,037.40 km) |
| Alton to Hudson (Ohio) | 3,712.67 mi (5,974.97 km) |
| Alton to Hudson (Wisconsin) | 3,975.43 mi (6,397.84 km) |
| Alton to Hueytown (Alabama) | 4,303.41 mi (6,925.67 km) |
| Alton to Hugo (Minnesota) | 3,974.29 mi (6,396.01 km) |
| Alton to Humacao (Puerto Rico) | 4,163.83 mi (6,701.03 km) |
| Alton to Humble (Texas) | 4,808.46 mi (7,738.47 km) |
