| Webster Groves to Johnstown (Pennsylvania) | 621.28 mi (999.86 km) |
| Webster Groves to Joliet (Illinois) | 233.73 mi (376.15 km) |
| Webster Groves to Jonesboro (Arkansas) | 191.90 mi (308.84 km) |
| Webster Groves to Joplin (Missouri) | 249.21 mi (401.07 km) |
| Webster Groves to Joppatowne (Maryland) | 753.29 mi (1,212.31 km) |
| Webster Groves to Juana Díaz (Puerto Rico) | 2,016.85 mi (3,245.81 km) |
| Webster Groves to Junction City (Kansas) | 351.03 mi (564.92 km) |
| Webster Groves to Juneau (Alaska) | 2,366.40 mi (3,808.35 km) |
| Webster Groves to Jupiter (Florida) | 1,000.46 mi (1,610.08 km) |
| Webster Groves to Jupiter Farms (Florida) | 996.71 mi (1,604.05 km) |
| Webster Groves to Jurupa Valley (California) | 1,537.01 mi (2,473.58 km) |
| Webster Groves to Justice (Illinois) | 255.82 mi (411.70 km) |
| Webster Groves to Kahului (Hawaii) | 4,062.61 mi (6,538.14 km) |
| Webster Groves to Kailua (Hawaii) | 4,111.87 mi (6,617.41 km) |
| Webster Groves to Kalamazoo (Michigan) | 357.34 mi (575.09 km) |
