| Rock Island to Troy (Michigan) | 389.22 mi (626.39 km) |
| Rock Island to Troy (Missouri) | 173.88 mi (279.84 km) |
| Rock Island to Troy (New York) | 869.67 mi (1,399.59 km) |
| Rock Island to Troy (Ohio) | 347.25 mi (558.85 km) |
| Rock Island to Truckee (California) | 1,556.67 mi (2,505.22 km) |
| Rock Island to Trujillo Alto (Puerto Rico) | 2,155.86 mi (3,469.53 km) |
| Rock Island to Trumbull Center (Connecticut) | 900.98 mi (1,449.99 km) |
| Rock Island to Trussville (Alabama) | 583.49 mi (939.03 km) |
| Rock Island to Tualatin (Oregon) | 1,626.67 mi (2,617.87 km) |
| Rock Island to Tuckahoe (Virginia) | 741.81 mi (1,193.83 km) |
| Rock Island to Tucker (Georgia) | 631.59 mi (1,016.45 km) |
| Rock Island to Tucson (Arizona) | 1,289.39 mi (2,075.08 km) |
| Rock Island to Tucson Estates (Arizona) | 1,300.18 mi (2,092.44 km) |
| Rock Island to Tucson Mountains (Arizona) | 1,293.72 mi (2,082.04 km) |
| Rock Island to Tukwila (Washington) | 1,604.33 mi (2,581.91 km) |
