| Mercer Island to Thornaby on Tees | 4,588.45 mi (7,384.39 km) |
| Mercer Island to Thornbury | 4,714.46 mi (7,587.18 km) |
| Mercer Island to Thorne | 4,648.28 mi (7,480.69 km) |
| Mercer Island to Thornton | 4,615.57 mi (7,428.05 km) |
| Mercer Island to Thornton Heath | 4,790.31 mi (7,709.26 km) |
| Mercer Island to Thorpe Saint Andrew | 4,759.92 mi (7,660.35 km) |
| Mercer Island to Thundersley | 4,799.28 mi (7,723.69 km) |
| Mercer Island to Tilbury | 4,799.25 mi (7,723.64 km) |
| Mercer Island to Tilehurst | 4,762.49 mi (7,664.49 km) |
| Mercer Island to Timperley | 4,624.66 mi (7,442.67 km) |
| Mercer Island to Tipton | 4,677.37 mi (7,527.50 km) |
| Mercer Island to Tiptree | 4,790.23 mi (7,709.12 km) |
| Mercer Island to Tiverton | 4,725.82 mi (7,605.48 km) |
| Mercer Island to Todmorden | 4,613.31 mi (7,424.41 km) |
| Mercer Island to Tonbridge | 4,811.48 mi (7,743.33 km) |
