| Duluth to Hutchinson (Minnesota) | 169.27 mi (272.42 km) |
| Duluth to Hutto (Texas) | 1,158.35 mi (1,864.18 km) |
| Duluth to Hyattsville (Maryland) | 936.95 mi (1,507.88 km) |
| Duluth to Hybla Valley (Virginia) | 941.30 mi (1,514.88 km) |
| Duluth to Idaho Falls (Idaho) | 993.20 mi (1,598.40 km) |
| Duluth to Idylwood (Virginia) | 929.89 mi (1,496.52 km) |
| Duluth to Ilchester (Maryland) | 933.34 mi (1,502.07 km) |
| Duluth to Immokalee (Florida) | 1,523.13 mi (2,451.24 km) |
| Duluth to Imperial (California) | 1,562.57 mi (2,514.72 km) |
| Duluth to Imperial Beach (California) | 1,639.76 mi (2,638.94 km) |
| Duluth to Independence (Kentucky) | 662.65 mi (1,066.44 km) |
| Duluth to Independence (Missouri) | 542.81 mi (873.56 km) |
| Duluth to Indian Trail (North Carolina) | 1,004.79 mi (1,617.06 km) |
| Duluth to Indiana (Pennsylvania) | 774.00 mi (1,245.63 km) |
| Duluth to Indianapolis (Indiana) | 569.44 mi (916.43 km) |
