| Tomball to Ridgefield Park (New Jersey) | 1,418.72 mi (2,283.20 km) |
| Tomball to Ridgeland (Mississippi) | 360.91 mi (580.83 km) |
| Tomball to Ridgewood (New Jersey) | 1,418.06 mi (2,282.15 km) |
| Tomball to Rifle (Colorado) | 947.41 mi (1,524.70 km) |
| Tomball to Rincon (Georgia) | 862.92 mi (1,388.74 km) |
| Tomball to Ringwood (New Jersey) | 1,414.13 mi (2,275.83 km) |
| Tomball to Río Grande (Puerto Rico) | 2,035.24 mi (3,275.40 km) |
| Tomball to Rio Grande City (Texas) | 322.22 mi (518.56 km) |
| Tomball to Rio Linda (California) | 1,580.63 mi (2,543.78 km) |
| Tomball to Rio Rancho (New Mexico) | 736.68 mi (1,185.57 km) |
| Tomball to Rio Rico (Arizona) | 916.53 mi (1,475.01 km) |
| Tomball to Ripon (California) | 1,549.22 mi (2,493.22 km) |
| Tomball to River Edge (New Jersey) | 1,419.94 mi (2,285.18 km) |
| Tomball to River Falls (Wisconsin) | 1,033.15 mi (1,662.69 km) |
| Tomball to River Forest (Illinois) | 923.57 mi (1,486.34 km) |
