| Rio Grande City to Platteville (Wisconsin) | 1,223.86 mi (1,969.61 km) |
| Rio Grande City to Plattsburgh (New York) | 1,891.97 mi (3,044.82 km) |
| Rio Grande City to Pleasant Grove (Utah) | 1,217.80 mi (1,959.86 km) |
| Rio Grande City to Pleasant Hill (California) | 1,571.03 mi (2,528.33 km) |
| Rio Grande City to Pleasant Hill (Iowa) | 1,093.44 mi (1,759.72 km) |
| Rio Grande City to Pleasant Prairie (Wisconsin) | 1,275.07 mi (2,052.03 km) |
| Rio Grande City to Pleasant View (Utah) | 1,276.56 mi (2,054.42 km) |
| Rio Grande City to Pleasanton (California) | 1,553.30 mi (2,499.80 km) |
| Rio Grande City to Pleasanton (Texas) | 179.61 mi (289.05 km) |
| Rio Grande City to Pleasantville (New Jersey) | 1,663.83 mi (2,677.68 km) |
| Rio Grande City to Plover (Wisconsin) | 1,352.00 mi (2,175.84 km) |
| Rio Grande City to Plum (Pennsylvania) | 1,464.07 mi (2,356.19 km) |
| Rio Grande City to Plymouth (Indiana) | 1,255.57 mi (2,020.65 km) |
| Rio Grande City to Plymouth (Minnesota) | 1,321.88 mi (2,127.35 km) |
| Rio Grande City to Pocatello (Idaho) | 1,374.40 mi (2,211.89 km) |
