| Alton to Hutchinson (Minnesota) | 4,038.57 mi (6,499.45 km) |
| Alton to Hutto (Texas) | 4,870.52 mi (7,838.34 km) |
| Alton to Hyattsville (Maryland) | 3,631.79 mi (5,844.80 km) |
| Alton to Hybla Valley (Virginia) | 3,646.50 mi (5,868.47 km) |
| Alton to Idaho Falls (Idaho) | 4,707.69 mi (7,576.29 km) |
| Alton to Idylwood (Virginia) | 3,645.30 mi (5,866.54 km) |
| Alton to Ilchester (Maryland) | 3,612.71 mi (5,814.10 km) |
| Alton to Immokalee (Florida) | 4,415.67 mi (7,106.34 km) |
| Alton to Imperial (California) | 5,409.29 mi (8,705.41 km) |
| Alton to Imperial Beach (California) | 5,476.44 mi (8,813.48 km) |
| Alton to Independence (Kentucky) | 3,940.38 mi (6,341.43 km) |
| Alton to Independence (Missouri) | 4,315.52 mi (6,945.16 km) |
| Alton to Indian Trail (North Carolina) | 3,962.29 mi (6,376.69 km) |
| Alton to Indiana (Pennsylvania) | 3,648.20 mi (5,871.21 km) |
| Alton to Indianapolis (Indiana) | 3,965.48 mi (6,381.82 km) |
