| Webster Groves to Hutchinson (Kansas) | 410.88 mi (661.25 km) |
| Webster Groves to Hutchinson (Minnesota) | 481.94 mi (775.61 km) |
| Webster Groves to Hutto (Texas) | 689.74 mi (1,110.02 km) |
| Webster Groves to Hyattsville (Maryland) | 721.61 mi (1,161.31 km) |
| Webster Groves to Hybla Valley (Virginia) | 715.46 mi (1,151.42 km) |
| Webster Groves to Idaho Falls (Idaho) | 1,175.72 mi (1,892.15 km) |
| Webster Groves to Idylwood (Virginia) | 708.33 mi (1,139.95 km) |
| Webster Groves to Ilchester (Maryland) | 731.13 mi (1,176.65 km) |
| Webster Groves to Immokalee (Florida) | 987.09 mi (1,588.56 km) |
| Webster Groves to Imperial (California) | 1,464.15 mi (2,356.31 km) |
| Webster Groves to Imperial Beach (California) | 1,554.17 mi (2,501.20 km) |
| Webster Groves to Independence (Kentucky) | 313.69 mi (504.83 km) |
| Webster Groves to Independence (Missouri) | 217.79 mi (350.50 km) |
| Webster Groves to Indian Trail (North Carolina) | 588.96 mi (947.85 km) |
| Webster Groves to Indiana (Pennsylvania) | 612.07 mi (985.03 km) |
