| Mercer Island to Torun | 5,115.95 mi (8,233.32 km) |
| Mercer Island to Trzcianka | 5,073.79 mi (8,165.48 km) |
| Mercer Island to Trzebiatow | 4,988.86 mi (8,028.79 km) |
| Mercer Island to Trzebinia | 5,309.81 mi (8,545.32 km) |
| Mercer Island to Trzebnica | 5,192.44 mi (8,356.43 km) |
| Mercer Island to Tuchola | 5,066.18 mi (8,153.24 km) |
| Mercer Island to Turek | 5,176.17 mi (8,330.24 km) |
| Mercer Island to Tychy | 5,303.00 mi (8,534.36 km) |
| Mercer Island to Ustka | 4,987.23 mi (8,026.17 km) |
| Mercer Island to Ustron | 5,324.77 mi (8,569.40 km) |
| Mercer Island to Ustrzyki Dolne | 5,413.36 mi (8,711.96 km) |
| Mercer Island to Wabrzezno | 5,105.96 mi (8,217.25 km) |
| Mercer Island to Wadowice | 5,327.82 mi (8,574.29 km) |
| Mercer Island to Wagrowiec | 5,103.20 mi (8,212.80 km) |
| Mercer Island to Walbrzych | 5,209.99 mi (8,384.67 km) |
