| Harrow to Bollullos par del Condado | 1,029.74 mi (1,657.20 km) |
| Harrow to Bormujos | 1,021.18 mi (1,643.43 km) |
| Harrow to Brenes | 1,006.25 mi (1,619.40 km) |
| Harrow to Brunete | 792.03 mi (1,274.66 km) |
| Harrow to Bueu | 752.74 mi (1,211.42 km) |
| Harrow to Bullas | 937.31 mi (1,508.45 km) |
| Harrow to Bunol | 840.74 mi (1,353.03 km) |
| Harrow to Burela de Cabo | 638.38 mi (1,027.38 km) |
| Harrow to Burgos | 657.71 mi (1,058.49 km) |
| Harrow to Burjasot | 834.46 mi (1,342.93 km) |
| Harrow to Burriana | 808.08 mi (1,300.48 km) |
| Harrow to Cabanaquinta | 634.96 mi (1,021.88 km) |
| Harrow to Cabanillas del Campo | 768.64 mi (1,237.01 km) |
| Harrow to Cabra | 995.54 mi (1,602.16 km) |
| Harrow to Caceres | 884.61 mi (1,423.65 km) |
