| Mercer Island to Willich | 4,965.42 mi (7,991.06 km) |
| Mercer Island to Willstatt | 5,155.78 mi (8,297.43 km) |
| Mercer Island to Wilnsdorf | 5,028.04 mi (8,091.85 km) |
| Mercer Island to Wilsdruff | 5,135.79 mi (8,265.25 km) |
| Mercer Island to Winnenden | 5,172.35 mi (8,324.10 km) |
| Mercer Island to Winsen | 4,926.68 mi (7,928.73 km) |
| Mercer Island to Winterberg | 5,015.43 mi (8,071.56 km) |
| Mercer Island to Wipperfurth | 4,994.11 mi (8,037.25 km) |
| Mercer Island to Wismar | 4,921.87 mi (7,920.98 km) |
| Mercer Island to Witten | 4,974.21 mi (8,005.22 km) |
| Mercer Island to Wittenberg | 5,067.91 mi (8,156.01 km) |
| Mercer Island to Wittenberge | 4,981.23 mi (8,016.52 km) |
| Mercer Island to Wittingen | 4,976.19 mi (8,008.40 km) |
| Mercer Island to Wittlich | 5,047.25 mi (8,122.77 km) |
| Mercer Island to Wittmund | 4,860.73 mi (7,822.58 km) |
