| Southborough to Aleksandrow Lodzki | 818.00 mi (1,316.45 km) |
| Southborough to Andrychow | 840.68 mi (1,352.94 km) |
| Southborough to Augustow | 968.78 mi (1,559.10 km) |
| Southborough to Banino | 787.91 mi (1,268.02 km) |
| Southborough to Barlinek | 645.53 mi (1,038.88 km) |
| Southborough to Bartoszyce | 882.35 mi (1,420.00 km) |
| Southborough to Bedzin | 823.87 mi (1,325.89 km) |
| Southborough to Belchatow | 823.63 mi (1,325.51 km) |
| Southborough to Biala Podlaska | 978.59 mi (1,574.89 km) |
| Southborough to Bialogard | 686.83 mi (1,105.35 km) |
| Southborough to Bialy Kamien | 694.78 mi (1,118.14 km) |
| Southborough to Bialystok | 975.35 mi (1,569.67 km) |
| Southborough to Bielawa | 711.31 mi (1,144.74 km) |
| Southborough to Bielsk Podlaski | 978.47 mi (1,574.70 km) |
| Southborough to Bielsko-Biala | 828.34 mi (1,333.08 km) |
