| Southborough to Belvedere Marittimo | 1,095.21 mi (1,762.57 km) |
| Southborough to Benevento | 977.91 mi (1,573.79 km) |
| Southborough to Bergamo | 572.35 mi (921.11 km) |
| Southborough to Bernalda | 1,080.20 mi (1,738.41 km) |
| Southborough to Bertinoro | 733.02 mi (1,179.68 km) |
| Southborough to Besana in Brianza | 558.95 mi (899.54 km) |
| Southborough to Besozzo | 530.90 mi (854.40 km) |
| Southborough to Biancavilla | 1,174.75 mi (1,890.58 km) |
| Southborough to Biassono | 561.70 mi (903.96 km) |
| Southborough to Bibbiano | 650.40 mi (1,046.72 km) |
| Southborough to Bibbiena | 744.83 mi (1,198.69 km) |
| Southborough to Biella | 526.31 mi (847.01 km) |
| Southborough to Bisceglie | 1,031.54 mi (1,660.10 km) |
| Southborough to Bisignano | 1,114.39 mi (1,793.44 km) |
| Southborough to Bitetto | 1,050.83 mi (1,691.14 km) |
