| Katy to River Ridge (Louisiana) | 336.58 mi (541.67 km) |
| Katy to Riverbank (California) | 1,537.08 mi (2,473.69 km) |
| Katy to Riverdale (Georgia) | 720.08 mi (1,158.85 km) |
| Katy to Riverdale (Illinois) | 938.21 mi (1,509.91 km) |
| Katy to Riverside (California) | 1,294.56 mi (2,083.39 km) |
| Katy to Riverside (Ohio) | 956.69 mi (1,539.65 km) |
| Katy to Riverton (Utah) | 1,171.14 mi (1,884.77 km) |
| Katy to Riverton (Wyoming) | 1,149.36 mi (1,849.72 km) |
| Katy to Riverview (Florida) | 830.02 mi (1,335.79 km) |
| Katy to Riverview (Michigan) | 1,107.09 mi (1,781.69 km) |
| Katy to Riviera Beach (Florida) | 980.37 mi (1,577.76 km) |
| Katy to Riviera Beach (Maryland) | 1,272.28 mi (2,047.54 km) |
| Katy to Roanoke (Virginia) | 1,048.53 mi (1,687.45 km) |
| Katy to Roanoke Rapids (North Carolina) | 1,146.02 mi (1,844.35 km) |
| Katy to Robbinsdale (Minnesota) | 1,061.45 mi (1,708.24 km) |
