| South Portland to Hazelwood (Missouri) | 1,093.73 mi (1,760.18 km) |
| South Portland to Hazleton (Pennsylvania) | 344.36 mi (554.20 km) |
| South Portland to Healdsburg (California) | 2,712.18 mi (4,364.84 km) |
| South Portland to Heath (Ohio) | 672.63 mi (1,082.50 km) |
| South Portland to Heber (Utah) | 2,097.91 mi (3,376.26 km) |
| South Portland to Helena (Alabama) | 1,143.78 mi (1,840.74 km) |
| South Portland to Helena (Montana) | 2,021.15 mi (3,252.72 km) |
| South Portland to Hemet (California) | 2,574.08 mi (4,142.59 km) |
| South Portland to Henderson (Kentucky) | 987.23 mi (1,588.79 km) |
| South Portland to Henderson (Nevada) | 2,401.96 mi (3,865.58 km) |
| South Portland to Henderson (North Carolina) | 662.53 mi (1,066.25 km) |
| South Portland to Henderson (Texas) | 1,544.88 mi (2,486.24 km) |
| South Portland to Hendersonville (North Carolina) | 864.64 mi (1,391.50 km) |
| South Portland to Hendersonville (Tennessee) | 998.40 mi (1,606.77 km) |
| South Portland to Hercules (California) | 2,700.26 mi (4,345.64 km) |
