| Duncan to Beverly Hills (California) | 1,167.29 mi (1,878.57 km) |
| Duncan to Beverly Hills (Florida) | 987.09 mi (1,588.57 km) |
| Duncan to Beverly Hills (Michigan) | 963.99 mi (1,551.40 km) |
| Duncan to Bexley (Ohio) | 903.89 mi (1,454.67 km) |
| Duncan to Biddeford (Maine) | 1,589.37 mi (2,557.85 km) |
| Duncan to Big Bear City (California) | 1,074.36 mi (1,729.02 km) |
| Duncan to Big Lake (Minnesota) | 778.10 mi (1,252.24 km) |
| Duncan to Big Spring (Texas) | 259.65 mi (417.87 km) |
| Duncan to Billings (Montana) | 956.84 mi (1,539.88 km) |
| Duncan to Biloxi (Mississippi) | 594.17 mi (956.22 km) |
| Duncan to Binghamton (New York) | 1,297.66 mi (2,088.38 km) |
| Duncan to Birmingham (Alabama) | 640.46 mi (1,030.72 km) |
| Duncan to Birmingham (Michigan) | 965.91 mi (1,554.48 km) |
| Duncan to Bismarck (North Dakota) | 860.89 mi (1,385.46 km) |
| Duncan to Bithlo (Florida) | 1,070.87 mi (1,723.40 km) |
