| Katy to Rockville (Maryland) | 1,239.41 mi (1,994.64 km) |
| Katy to Rockville Centre (New York) | 1,454.51 mi (2,340.80 km) |
| Katy to Rockwall (Texas) | 218.91 mi (352.31 km) |
| Katy to Rocky Mount (North Carolina) | 1,127.75 mi (1,814.94 km) |
| Katy to Rocky Point (New York) | 1,495.67 mi (2,407.05 km) |
| Katy to Rocky River (Ohio) | 1,123.11 mi (1,807.47 km) |
| Katy to Roessleville (New York) | 1,510.02 mi (2,430.15 km) |
| Katy to Rogers (Arkansas) | 461.31 mi (742.41 km) |
| Katy to Rogers (Minnesota) | 1,070.81 mi (1,723.31 km) |
| Katy to Rohnert Park (California) | 1,639.79 mi (2,638.98 km) |
| Katy to Rolla (Missouri) | 609.86 mi (981.48 km) |
| Katy to Rolling Meadows (Illinois) | 953.58 mi (1,534.64 km) |
| Katy to Roma (Texas) | 302.76 mi (487.25 km) |
| Katy to Rome (Georgia) | 695.69 mi (1,119.60 km) |
| Katy to Rome (New York) | 1,455.32 mi (2,342.11 km) |
