| Robstown to Ridgefield Park (New Jersey) | 1,614.93 mi (2,598.98 km) |
| Robstown to Ridgeland (Mississippi) | 551.47 mi (887.50 km) |
| Robstown to Ridgewood (New Jersey) | 1,614.59 mi (2,598.43 km) |
| Robstown to Rifle (Colorado) | 996.38 mi (1,603.52 km) |
| Robstown to Rincon (Georgia) | 1,029.63 mi (1,657.03 km) |
| Robstown to Ringwood (New Jersey) | 1,611.00 mi (2,592.66 km) |
| Robstown to Río Grande (Puerto Rico) | 2,117.86 mi (3,408.37 km) |
| Robstown to Rio Grande City (Texas) | 120.66 mi (194.18 km) |
| Robstown to Rio Linda (California) | 1,559.63 mi (2,509.98 km) |
| Robstown to Rio Rancho (New Mexico) | 741.43 mi (1,193.22 km) |
| Robstown to Rio Rico (Arizona) | 839.03 mi (1,350.29 km) |
| Robstown to Ripon (California) | 1,520.61 mi (2,447.18 km) |
| Robstown to River Edge (New Jersey) | 1,616.31 mi (2,601.20 km) |
| Robstown to River Falls (Wisconsin) | 1,211.54 mi (1,949.78 km) |
| Robstown to River Forest (Illinois) | 1,121.19 mi (1,804.38 km) |
