| Mercer Island to Benavente | 5,195.51 mi (8,361.36 km) |
| Mercer Island to Bombarral | 5,167.32 mi (8,315.99 km) |
| Mercer Island to Bougado | 5,078.17 mi (8,172.53 km) |
| Mercer Island to Braga | 5,071.54 mi (8,161.86 km) |
| Mercer Island to Braganca | 5,112.68 mi (8,228.07 km) |
| Mercer Island to Cabeceiras de Basto | 5,085.85 mi (8,184.88 km) |
| Mercer Island to Cacem | 5,188.37 mi (8,349.88 km) |
| Mercer Island to Cadaval | 5,171.06 mi (8,322.02 km) |
| Mercer Island to Caldas da Rainha | 5,160.63 mi (8,305.23 km) |
| Mercer Island to Calheta | 5,212.13 mi (8,388.12 km) |
| Mercer Island to Camara de Lobos | 5,221.03 mi (8,402.44 km) |
| Mercer Island to Canico | 5,228.79 mi (8,414.92 km) |
| Mercer Island to Cantanhede | 5,129.40 mi (8,254.97 km) |
| Mercer Island to Carregal do Sal | 5,144.80 mi (8,279.76 km) |
| Mercer Island to Cartaxo | 5,186.36 mi (8,346.64 km) |
