| Rio Grande City to Noblesville (Indiana) | 1,196.86 mi (1,926.16 km) |
| Rio Grande City to Nocatee (Florida) | 1,089.25 mi (1,752.97 km) |
| Rio Grande City to Nogales (Arizona) | 808.96 mi (1,301.90 km) |
| Rio Grande City to Nolensville (Tennessee) | 975.03 mi (1,569.15 km) |
| Rio Grande City to Norco (California) | 1,231.74 mi (1,982.30 km) |
| Rio Grande City to Norcross (Georgia) | 1,015.71 mi (1,634.63 km) |
| Rio Grande City to Norfolk (Nebraska) | 1,084.33 mi (1,745.06 km) |
| Rio Grande City to Norfolk (Virginia) | 1,507.42 mi (2,425.95 km) |
| Rio Grande City to Normal (Illinois) | 1,127.80 mi (1,815.01 km) |
| Rio Grande City to Norman (Oklahoma) | 617.86 mi (994.35 km) |
| Rio Grande City to Norridge (Illinois) | 1,244.31 mi (2,002.52 km) |
| Rio Grande City to Norristown (Pennsylvania) | 1,647.49 mi (2,651.37 km) |
| Rio Grande City to North Adams (Massachusetts) | 1,833.78 mi (2,951.18 km) |
| Rio Grande City to North Amityville (New York) | 1,755.95 mi (2,825.92 km) |
| Rio Grande City to North Arlington (New Jersey) | 1,725.30 mi (2,776.59 km) |
