| National City to Ridgeland (Mississippi) | 1,565.52 mi (2,519.46 km) |
| National City to Ridgewood (New Jersey) | 2,420.25 mi (3,895.02 km) |
| National City to Rifle (Colorado) | 703.80 mi (1,132.66 km) |
| National City to Rincon (Georgia) | 2,080.34 mi (3,347.98 km) |
| National City to Ringwood (New Jersey) | 2,411.77 mi (3,881.37 km) |
| National City to Río Grande (Puerto Rico) | 3,311.19 mi (5,328.85 km) |
| National City to Rio Grande City (Texas) | 1,179.45 mi (1,898.15 km) |
| National City to Rio Linda (California) | 482.09 mi (775.84 km) |
| National City to Rio Rancho (New Mexico) | 622.46 mi (1,001.75 km) |
| National City to Rio Rico (Arizona) | 366.64 mi (590.05 km) |
| National City to Ripon (California) | 418.04 mi (672.78 km) |
| National City to River Edge (New Jersey) | 2,424.14 mi (3,901.28 km) |
| National City to River Falls (Wisconsin) | 1,555.22 mi (2,502.89 km) |
| National City to River Forest (Illinois) | 1,720.84 mi (2,769.42 km) |
| National City to River Grove (Illinois) | 1,720.33 mi (2,768.61 km) |
