| Rio Grande City to Troy (Michigan) | 1,426.75 mi (2,296.13 km) |
| Rio Grande City to Troy (Missouri) | 981.41 mi (1,579.42 km) |
| Rio Grande City to Troy (New York) | 1,810.99 mi (2,914.51 km) |
| Rio Grande City to Troy (Ohio) | 1,262.87 mi (2,032.39 km) |
| Rio Grande City to Truckee (California) | 1,522.99 mi (2,451.02 km) |
| Rio Grande City to Trujillo Alto (Puerto Rico) | 2,161.83 mi (3,479.14 km) |
| Rio Grande City to Trumbull Center (Connecticut) | 1,783.41 mi (2,870.12 km) |
| Rio Grande City to Trussville (Alabama) | 886.53 mi (1,426.74 km) |
| Rio Grande City to Tualatin (Oregon) | 1,862.58 mi (2,997.54 km) |
| Rio Grande City to Tuckahoe (Virginia) | 1,460.34 mi (2,350.20 km) |
| Rio Grande City to Tucker (Georgia) | 1,012.98 mi (1,630.23 km) |
| Rio Grande City to Tucson (Arizona) | 828.20 mi (1,332.86 km) |
| Rio Grande City to Tucson Estates (Arizona) | 842.04 mi (1,355.12 km) |
| Rio Grande City to Tucson Mountains (Arizona) | 842.50 mi (1,355.88 km) |
| Rio Grande City to Tukwila (Washington) | 1,934.40 mi (3,113.11 km) |
