| Slough to Benisa | 884.52 mi (1,423.49 km) |
| Slough to Berga | 660.07 mi (1,062.28 km) |
| Slough to Berja | 1,019.70 mi (1,641.05 km) |
| Slough to Bermeo | 567.64 mi (913.53 km) |
| Slough to Berriozar | 601.34 mi (967.76 km) |
| Slough to Betanzos | 670.30 mi (1,078.74 km) |
| Slough to Betera | 823.35 mi (1,325.06 km) |
| Slough to Bilbao | 580.42 mi (934.09 km) |
| Slough to Binefar | 668.64 mi (1,076.08 km) |
| Slough to Binisalem | 833.38 mi (1,341.20 km) |
| Slough to Blanes | 697.99 mi (1,123.30 km) |
| Slough to Boadilla del Monte | 782.91 mi (1,259.97 km) |
| Slough to Boiro | 725.30 mi (1,167.25 km) |
| Slough to Bolanos de Calatrava | 885.31 mi (1,424.76 km) |
| Slough to Bollullos de la Mitacion | 1,016.17 mi (1,635.36 km) |
