| Southborough to Beyne-Heusay | 237.63 mi (382.43 km) |
| Southborough to Bierbeek | 197.01 mi (317.06 km) |
| Southborough to Bilzen | 229.13 mi (368.74 km) |
| Southborough to Binche | 178.32 mi (286.98 km) |
| Southborough to Bissegem | 130.53 mi (210.07 km) |
| Southborough to Blankenberge | 123.74 mi (199.15 km) |
| Southborough to Blegny | 240.57 mi (387.17 km) |
| Southborough to Bocholt | 230.19 mi (370.46 km) |
| Southborough to Boechout | 182.77 mi (294.15 km) |
| Southborough to Bonheiden | 185.38 mi (298.34 km) |
| Southborough to Boom | 177.93 mi (286.35 km) |
| Southborough to Boortmeerbeek | 187.12 mi (301.14 km) |
| Southborough to Borgerhout | 180.84 mi (291.04 km) |
| Southborough to Borgloon | 222.23 mi (357.64 km) |
| Southborough to Bornem | 172.09 mi (276.94 km) |
