| Rio Grande City to Ramsey (New Jersey) | 1,733.24 mi (2,789.37 km) |
| Rio Grande City to Rancho Cordova (California) | 1,548.69 mi (2,492.38 km) |
| Rio Grande City to Rancho Cucamonga (California) | 1,237.43 mi (1,991.45 km) |
| Rio Grande City to Rancho Mirage (California) | 1,167.51 mi (1,878.92 km) |
| Rio Grande City to Rancho Palos Verdes (California) | 1,271.97 mi (2,047.04 km) |
| Rio Grande City to Rancho San Diego (California) | 1,171.50 mi (1,885.35 km) |
| Rio Grande City to Rancho Santa Margarita (California) | 1,227.61 mi (1,975.64 km) |
| Rio Grande City to Randallstown (Maryland) | 1,554.50 mi (2,501.73 km) |
| Rio Grande City to Rantoul (Illinois) | 1,140.07 mi (1,834.76 km) |
| Rio Grande City to Rapid City (South Dakota) | 1,246.78 mi (2,006.50 km) |
| Rio Grande City to Ravenna (Ohio) | 1,430.57 mi (2,302.29 km) |
| Rio Grande City to Raymondville (Texas) | 64.96 mi (104.55 km) |
| Rio Grande City to Raymore (Missouri) | 894.76 mi (1,439.97 km) |
| Rio Grande City to Raytown (Missouri) | 907.28 mi (1,460.12 km) |
| Rio Grande City to Reading (Ohio) | 1,215.74 mi (1,956.55 km) |
