| Harrow Weald to Brownhills | 98.81 mi (159.03 km) |
| Harrow Weald to Broxbourne | 16.91 mi (27.22 km) |
| Harrow Weald to Broxburn | 325.28 mi (523.49 km) |
| Harrow Weald to Bryn | 163.16 mi (262.58 km) |
| Harrow Weald to Buckhurst Hill | 16.20 mi (26.08 km) |
| Harrow Weald to Buckie | 432.39 mi (695.86 km) |
| Harrow Weald to Buckingham | 38.65 mi (62.21 km) |
| Harrow Weald to Buckley | 158.58 mi (255.21 km) |
| Harrow Weald to Bucksburn | 392.04 mi (630.93 km) |
| Harrow Weald to Bude | 189.69 mi (305.28 km) |
| Harrow Weald to Bulwell | 103.10 mi (165.93 km) |
| Harrow Weald to Burbage | 76.88 mi (123.73 km) |
| Harrow Weald to Burgess Hill | 45.88 mi (73.83 km) |
| Harrow Weald to Burnham | 14.48 mi (23.30 km) |
| Harrow Weald to Burnham-on-Sea | 117.13 mi (188.51 km) |
