| Maryland Heights to Hutchinson (Kansas) | 404.93 mi (651.67 km) |
| Maryland Heights to Hutchinson (Minnesota) | 470.94 mi (757.91 km) |
| Maryland Heights to Hutto (Texas) | 692.94 mi (1,115.18 km) |
| Maryland Heights to Hyattsville (Maryland) | 727.13 mi (1,170.21 km) |
| Maryland Heights to Hybla Valley (Virginia) | 721.19 mi (1,160.64 km) |
| Maryland Heights to Idaho Falls (Idaho) | 1,166.12 mi (1,876.69 km) |
| Maryland Heights to Idylwood (Virginia) | 713.94 mi (1,148.97 km) |
| Maryland Heights to Ilchester (Maryland) | 736.41 mi (1,185.15 km) |
| Maryland Heights to Immokalee (Florida) | 998.30 mi (1,606.61 km) |
| Maryland Heights to Imperial (California) | 1,459.02 mi (2,348.06 km) |
| Maryland Heights to Imperial Beach (California) | 1,548.92 mi (2,492.75 km) |
| Maryland Heights to Independence (Kentucky) | 319.27 mi (513.82 km) |
| Maryland Heights to Independence (Missouri) | 209.90 mi (337.80 km) |
| Maryland Heights to Indian Trail (North Carolina) | 598.38 mi (963.00 km) |
| Maryland Heights to Indiana (Pennsylvania) | 615.74 mi (990.93 km) |
