| South Portland to Hereford (Texas) | 1,809.79 mi (2,912.57 km) |
| South Portland to Hermiston (Oregon) | 2,371.75 mi (3,816.96 km) |
| South Portland to Hermitage (Pennsylvania) | 543.21 mi (874.22 km) |
| South Portland to Hermosa Beach (California) | 2,639.58 mi (4,248.00 km) |
| South Portland to Hernando (Mississippi) | 1,211.93 mi (1,950.41 km) |
| South Portland to Herndon (Virginia) | 488.99 mi (786.95 km) |
| South Portland to Herriman (Utah) | 2,128.88 mi (3,426.10 km) |
| South Portland to Herrin (Illinois) | 1,057.99 mi (1,702.68 km) |
| South Portland to Hershey (Pennsylvania) | 400.13 mi (643.94 km) |
| South Portland to Hesperia (California) | 2,567.66 mi (4,132.24 km) |
| South Portland to Hewitt (Texas) | 1,686.19 mi (2,713.66 km) |
| South Portland to Hialeah (Florida) | 1,350.05 mi (2,172.69 km) |
| South Portland to Hialeah Gardens (Florida) | 1,350.11 mi (2,172.79 km) |
| South Portland to Hibbing (Minnesota) | 1,123.15 mi (1,807.54 km) |
| South Portland to Hickory (North Carolina) | 799.51 mi (1,286.68 km) |
