| Webster Groves to River Grove (Illinois) | 266.03 mi (428.14 km) |
| Webster Groves to River Ridge (Louisiana) | 596.14 mi (959.39 km) |
| Webster Groves to Riverbank (California) | 1,655.26 mi (2,663.89 km) |
| Webster Groves to Riverdale (Georgia) | 480.00 mi (772.49 km) |
| Webster Groves to Riverdale (Illinois) | 255.41 mi (411.04 km) |
| Webster Groves to Riverside (California) | 1,534.40 mi (2,469.38 km) |
| Webster Groves to Riverside (Ohio) | 343.79 mi (553.28 km) |
| Webster Groves to Riverton (Utah) | 1,155.98 mi (1,860.37 km) |
| Webster Groves to Riverton (Wyoming) | 990.97 mi (1,594.81 km) |
| Webster Groves to Riverview (Florida) | 876.49 mi (1,410.58 km) |
| Webster Groves to Riverview (Michigan) | 450.74 mi (725.39 km) |
| Webster Groves to Riviera Beach (Florida) | 1,009.75 mi (1,625.04 km) |
| Webster Groves to Riviera Beach (Maryland) | 744.20 mi (1,197.67 km) |
| Webster Groves to Roanoke (Virginia) | 573.40 mi (922.80 km) |
| Webster Groves to Roanoke Rapids (North Carolina) | 711.22 mi (1,144.60 km) |
