| Gateway to Hutchinson (Minnesota) | 1,445.72 mi (2,326.67 km) |
| Gateway to Hutto (Texas) | 996.07 mi (1,603.01 km) |
| Gateway to Hyattsville (Maryland) | 899.25 mi (1,447.20 km) |
| Gateway to Hybla Valley (Virginia) | 883.10 mi (1,421.22 km) |
| Gateway to Idaho Falls (Idaho) | 2,055.63 mi (3,308.22 km) |
| Gateway to Idylwood (Virginia) | 890.19 mi (1,432.62 km) |
| Gateway to Ilchester (Maryland) | 919.35 mi (1,479.56 km) |
| Gateway to Immokalee (Florida) | 22.44 mi (36.11 km) |
| Gateway to Imperial (California) | 2,066.35 mi (3,325.46 km) |
| Gateway to Imperial Beach (California) | 2,155.37 mi (3,468.73 km) |
| Gateway to Independence (Kentucky) | 870.06 mi (1,400.23 km) |
| Gateway to Independence (Missouri) | 1,130.04 mi (1,818.62 km) |
| Gateway to Indian Trail (North Carolina) | 590.25 mi (949.91 km) |
| Gateway to Indiana (Pennsylvania) | 981.50 mi (1,579.57 km) |
| Gateway to Indianapolis (Indiana) | 946.38 mi (1,523.05 km) |
