| South Portland to Bucak | 4,965.76 mi (7,991.61 km) |
| South Portland to Buharkent | 4,866.62 mi (7,832.07 km) |
| South Portland to Bulancak | 5,101.65 mi (8,210.31 km) |
| South Portland to Bulanik | 5,341.71 mi (8,596.66 km) |
| South Portland to Buldan | 4,866.52 mi (7,831.91 km) |
| South Portland to Bunyan | 5,111.26 mi (8,225.77 km) |
| South Portland to Burdur | 4,941.05 mi (7,951.85 km) |
| South Portland to Burhaniye | 4,724.30 mi (7,603.02 km) |
| South Portland to Bursa | 4,779.67 mi (7,692.14 km) |
| South Portland to Buyukcekmece | 4,723.55 mi (7,601.83 km) |
| South Portland to Buyukorhan | 4,793.61 mi (7,714.56 km) |
| South Portland to Buyukyoncali | 4,681.75 mi (7,534.54 km) |
| South Portland to Caglayancerit | 5,219.88 mi (8,400.59 km) |
| South Portland to Cal | 4,888.19 mi (7,866.78 km) |
| South Portland to Caldiran | 5,399.37 mi (8,689.45 km) |
