| Southborough to Bucak | 1,754.28 mi (2,823.25 km) |
| Southborough to Buharkent | 1,656.14 mi (2,665.30 km) |
| Southborough to Bulancak | 1,927.10 mi (3,101.37 km) |
| Southborough to Bulanik | 2,174.59 mi (3,499.67 km) |
| Southborough to Buldan | 1,655.80 mi (2,664.75 km) |
| Southborough to Bunyan | 1,910.88 mi (3,075.26 km) |
| Southborough to Burdur | 1,729.55 mi (2,783.44 km) |
| Southborough to Burhaniye | 1,513.29 mi (2,435.41 km) |
| Southborough to Bursa | 1,568.80 mi (2,524.74 km) |
| Southborough to Buyukcekmece | 1,513.76 mi (2,436.16 km) |
| Southborough to Buyukorhan | 1,582.13 mi (2,546.20 km) |
| Southborough to Buyukyoncali | 1,471.91 mi (2,368.81 km) |
| Southborough to Caglayancerit | 2,018.99 mi (3,249.25 km) |
| Southborough to Cal | 1,676.90 mi (2,698.71 km) |
| Southborough to Caldiran | 2,243.76 mi (3,610.98 km) |
