| Rio Grande City to Port Charlotte (Florida) | 1,031.52 mi (1,660.08 km) |
| Rio Grande City to Port Chester (New York) | 1,753.52 mi (2,822.01 km) |
| Rio Grande City to Port Hueneme (California) | 1,326.53 mi (2,134.84 km) |
| Rio Grande City to Port Huron (Michigan) | 1,471.51 mi (2,368.17 km) |
| Rio Grande City to Port Lavaca (Texas) | 204.86 mi (329.69 km) |
| Rio Grande City to Port Neches (Texas) | 387.08 mi (622.95 km) |
| Rio Grande City to Port Orange (Florida) | 1,104.00 mi (1,776.72 km) |
| Rio Grande City to Port Orchard (Washington) | 1,950.06 mi (3,138.32 km) |
| Rio Grande City to Port Royal (South Carolina) | 1,164.55 mi (1,874.16 km) |
| Rio Grande City to Port Salerno (Florida) | 1,149.61 mi (1,850.12 km) |
| Rio Grande City to Port St. John (Florida) | 1,112.92 mi (1,791.08 km) |
| Rio Grande City to Port St. Lucie (Florida) | 1,137.17 mi (1,830.09 km) |
| Rio Grande City to Port Washington (New York) | 1,747.50 mi (2,812.33 km) |
| Rio Grande City to Port Washington (Wisconsin) | 1,325.56 mi (2,133.29 km) |
| Rio Grande City to Port Wentworth (Georgia) | 1,133.62 mi (1,824.38 km) |
