| Duncan to Bay City (Michigan) | 976.22 mi (1,571.08 km) |
| Duncan to Bay City (Texas) | 400.84 mi (645.09 km) |
| Duncan to Bay Point (California) | 1,356.48 mi (2,183.05 km) |
| Duncan to Bay Shore (New York) | 1,410.55 mi (2,270.06 km) |
| Duncan to Bay Village (Ohio) | 991.65 mi (1,595.90 km) |
| Duncan to Bayamón (Puerto Rico) | 2,245.15 mi (3,613.22 km) |
| Duncan to Bayonet Point (Florida) | 994.21 mi (1,600.03 km) |
| Duncan to Bayonne (New Jersey) | 1,365.12 mi (2,196.95 km) |
| Duncan to Bayou Blue (Louisiana) | 542.82 mi (873.59 km) |
| Duncan to Bayou Cane (Louisiana) | 539.72 mi (868.60 km) |
| Duncan to Bayshore Gardens (Florida) | 1,031.21 mi (1,659.57 km) |
| Duncan to Baytown (Texas) | 372.83 mi (600.01 km) |
| Duncan to Beach Park (Illinois) | 769.03 mi (1,237.63 km) |
| Duncan to Beachwood (New Jersey) | 1,352.27 mi (2,176.27 km) |
| Duncan to Beachwood (Ohio) | 1,011.77 mi (1,628.29 km) |
