| Mercer Island to Zottegem | 4,920.57 mi (7,918.89 km) |
| Mercer Island to Zulte | 4,908.51 mi (7,899.48 km) |
| Mercer Island to Zwevegem | 4,912.55 mi (7,905.99 km) |
| Mercer Island to Zwijndrecht | 4,914.09 mi (7,908.46 km) |
| Mercer Island to Asenovgrad | 5,928.66 mi (9,541.26 km) |
| Mercer Island to Aytos | 5,927.81 mi (9,539.89 km) |
| Mercer Island to Balchik | 5,896.16 mi (9,488.96 km) |
| Mercer Island to Bankya | 5,851.62 mi (9,417.27 km) |
| Mercer Island to Bansko | 5,913.56 mi (9,516.96 km) |
| Mercer Island to Berkovitsa | 5,817.29 mi (9,362.03 km) |
| Mercer Island to Blagoevgrad | 5,894.64 mi (9,486.50 km) |
| Mercer Island to Botevgrad | 5,851.17 mi (9,416.54 km) |
| Mercer Island to Burgas | 5,944.43 mi (9,566.64 km) |
| Mercer Island to Byala Slatina | 5,818.05 mi (9,363.24 km) |
| Mercer Island to Chirpan | 5,925.46 mi (9,536.10 km) |
