| Tomball to Rockport (Texas) | 167.56 mi (269.66 km) |
| Tomball to Rockville (Maryland) | 1,216.60 mi (1,957.92 km) |
| Tomball to Rockville Centre (New York) | 1,431.54 mi (2,303.84 km) |
| Tomball to Rockwall (Texas) | 200.83 mi (323.21 km) |
| Tomball to Rocky Mount (North Carolina) | 1,106.78 mi (1,781.19 km) |
| Tomball to Rocky Point (New York) | 1,472.69 mi (2,370.06 km) |
| Tomball to Rocky River (Ohio) | 1,098.71 mi (1,768.20 km) |
| Tomball to Roessleville (New York) | 1,486.33 mi (2,392.02 km) |
| Tomball to Rogers (Arkansas) | 438.15 mi (705.14 km) |
| Tomball to Rogers (Minnesota) | 1,048.58 mi (1,687.53 km) |
| Tomball to Rohnert Park (California) | 1,641.34 mi (2,641.48 km) |
| Tomball to Rolla (Missouri) | 585.56 mi (942.37 km) |
| Tomball to Rolling Meadows (Illinois) | 929.04 mi (1,495.15 km) |
| Tomball to Roma (Texas) | 327.19 mi (526.56 km) |
| Tomball to Rome (Georgia) | 674.27 mi (1,085.14 km) |
