| Southgate to Brownhills | 103.87 mi (167.16 km) |
| Southgate to Broxbourne | 9.30 mi (14.97 km) |
| Southgate to Broxburn | 327.03 mi (526.30 km) |
| Southgate to Bryn | 167.14 mi (268.98 km) |
| Southgate to Buckhurst Hill | 6.97 mi (11.22 km) |
| Southgate to Buckie | 432.67 mi (696.31 km) |
| Southgate to Buckingham | 44.48 mi (71.58 km) |
| Southgate to Buckley | 163.96 mi (263.88 km) |
| Southgate to Bucksburn | 391.86 mi (630.64 km) |
| Southgate to Bude | 199.00 mi (320.25 km) |
| Southgate to Bulwell | 104.86 mi (168.76 km) |
| Southgate to Burbage | 80.78 mi (129.99 km) |
| Southgate to Burgess Hill | 46.85 mi (75.40 km) |
| Southgate to Burnham | 23.76 mi (38.24 km) |
| Southgate to Burnham-on-Sea | 126.45 mi (203.50 km) |
