| Harwich to Ayamonte | 1,101.92 mi (1,773.37 km) |
| Harwich to Azcoitia | 627.26 mi (1,009.48 km) |
| Harwich to Azpeitia | 626.53 mi (1,008.30 km) |
| Harwich to Azuqueca de Henares | 814.45 mi (1,310.74 km) |
| Harwich to Badajoz | 985.04 mi (1,585.27 km) |
| Harwich to Badalona | 726.96 mi (1,169.93 km) |
| Harwich to Baena | 1,025.66 mi (1,650.64 km) |
| Harwich to Baeza | 990.74 mi (1,594.44 km) |
| Harwich to Bailen | 987.46 mi (1,589.16 km) |
| Harwich to Balaguer | 701.19 mi (1,128.45 km) |
| Harwich to Banolas | 681.76 mi (1,097.18 km) |
| Harwich to Baranain | 645.71 mi (1,039.16 km) |
| Harwich to Barbadanes | 791.75 mi (1,274.20 km) |
| Harwich to Barbastro | 685.96 mi (1,103.95 km) |
| Harwich to Barcelona | 730.30 mi (1,175.31 km) |
