| Mercer Island to Totana | 5,503.89 mi (8,857.65 km) |
| Mercer Island to Trujillo | 5,267.55 mi (8,477.30 km) |
| Mercer Island to Tudela | 5,261.77 mi (8,467.99 km) |
| Mercer Island to Tudela de Duero | 5,195.04 mi (8,360.61 km) |
| Mercer Island to Tuineje | 5,563.23 mi (8,953.15 km) |
| Mercer Island to Ubeda | 5,429.70 mi (8,738.26 km) |
| Mercer Island to Ubrique | 5,433.04 mi (8,743.63 km) |
| Mercer Island to Umbrete | 5,372.05 mi (8,645.48 km) |
| Mercer Island to Utebo | 5,300.01 mi (8,529.55 km) |
| Mercer Island to Utiel | 5,413.03 mi (8,711.43 km) |
| Mercer Island to Utrera | 5,395.05 mi (8,682.50 km) |
| Mercer Island to Valdemorillo | 5,270.46 mi (8,481.99 km) |
| Mercer Island to Valdemoro | 5,300.09 mi (8,529.67 km) |
| Mercer Island to Valdepenas | 5,387.19 mi (8,669.84 km) |
| Mercer Island to Valencia | 5,444.46 mi (8,762.00 km) |
