| Duncan to Bucak | 6,465.36 mi (10,405.00 km) |
| Duncan to Buharkent | 6,372.89 mi (10,256.17 km) |
| Duncan to Bulancak | 6,524.83 mi (10,500.70 km) |
| Duncan to Bulanik | 6,748.57 mi (10,860.77 km) |
| Duncan to Buldan | 6,371.75 mi (10,254.34 km) |
| Duncan to Bunyan | 6,568.07 mi (10,570.28 km) |
| Duncan to Burdur | 6,440.60 mi (10,365.15 km) |
| Duncan to Burhaniye | 6,229.27 mi (10,025.05 km) |
| Duncan to Bursa | 6,268.42 mi (10,088.04 km) |
| Duncan to Buyukcekmece | 6,208.63 mi (9,991.83 km) |
| Duncan to Buyukorhan | 6,286.29 mi (10,116.81 km) |
| Duncan to Buyukyoncali | 6,167.62 mi (9,925.82 km) |
| Duncan to Caglayancerit | 6,675.20 mi (10,742.70 km) |
| Duncan to Cal | 6,390.09 mi (10,283.85 km) |
| Duncan to Caldiran | 6,792.01 mi (10,930.69 km) |
