| Willoughby to Troy (Illinois) | 491.10 mi (790.35 km) |
| Willoughby to Troy (Michigan) | 110.04 mi (177.09 km) |
| Willoughby to Troy (Missouri) | 536.33 mi (863.14 km) |
| Willoughby to Troy (New York) | 402.82 mi (648.28 km) |
| Willoughby to Troy (Ohio) | 183.91 mi (295.98 km) |
| Willoughby to Truckee (California) | 2,026.41 mi (3,261.19 km) |
| Willoughby to Trujillo Alto (Puerto Rico) | 1,847.34 mi (2,973.00 km) |
| Willoughby to Trumbull Center (Connecticut) | 426.74 mi (686.77 km) |
| Willoughby to Trussville (Alabama) | 621.01 mi (999.43 km) |
| Willoughby to Tualatin (Oregon) | 2,065.74 mi (3,324.49 km) |
| Willoughby to Tuckahoe (Virginia) | 346.34 mi (557.38 km) |
| Willoughby to Tucker (Georgia) | 560.19 mi (901.54 km) |
| Willoughby to Tucson (Arizona) | 1,744.64 mi (2,807.73 km) |
| Willoughby to Tucson Estates (Arizona) | 1,756.27 mi (2,826.44 km) |
| Willoughby to Tucson Mountains (Arizona) | 1,750.20 mi (2,816.67 km) |
