| Howard to Hutchinson (Minnesota) | 309.16 mi (497.54 km) |
| Howard to Hutto (Texas) | 1,097.20 mi (1,765.77 km) |
| Howard to Hyattsville (Maryland) | 691.60 mi (1,113.02 km) |
| Howard to Hybla Valley (Virginia) | 695.33 mi (1,119.02 km) |
| Howard to Idaho Falls (Idaho) | 1,187.53 mi (1,911.14 km) |
| Howard to Idylwood (Virginia) | 684.04 mi (1,100.86 km) |
| Howard to Ilchester (Maryland) | 688.92 mi (1,108.72 km) |
| Howard to Immokalee (Florida) | 1,307.44 mi (2,104.12 km) |
| Howard to Imperial (California) | 1,677.24 mi (2,699.26 km) |
| Howard to Imperial Beach (California) | 1,760.43 mi (2,833.14 km) |
| Howard to Independence (Kentucky) | 428.95 mi (690.34 km) |
| Howard to Independence (Missouri) | 496.99 mi (799.82 km) |
| Howard to Indian Trail (North Carolina) | 765.43 mi (1,231.85 km) |
| Howard to Indiana (Pennsylvania) | 529.71 mi (852.48 km) |
| Howard to Indianapolis (Indiana) | 345.83 mi (556.56 km) |
