| Duncan to Berkeley (California) | 1,373.11 mi (2,209.81 km) |
| Duncan to Berkley (Colorado) | 533.84 mi (859.13 km) |
| Duncan to Berkley (Michigan) | 965.70 mi (1,554.15 km) |
| Duncan to Berthoud (Colorado) | 557.66 mi (897.47 km) |
| Duncan to Berwick (Pennsylvania) | 1,261.77 mi (2,030.62 km) |
| Duncan to Berwyn (Illinois) | 745.48 mi (1,199.73 km) |
| Duncan to Bessemer (Alabama) | 632.34 mi (1,017.65 km) |
| Duncan to Bethany (Oklahoma) | 68.61 mi (110.42 km) |
| Duncan to Bethany (Oregon) | 1,512.65 mi (2,434.37 km) |
| Duncan to Bethel Park (Pennsylvania) | 1,057.06 mi (1,701.18 km) |
| Duncan to Bethesda (Maryland) | 1,188.77 mi (1,913.14 km) |
| Duncan to Bethlehem (Pennsylvania) | 1,300.16 mi (2,092.40 km) |
| Duncan to Bethpage (New York) | 1,398.62 mi (2,250.86 km) |
| Duncan to Bettendorf (Iowa) | 631.65 mi (1,016.55 km) |
| Duncan to Beverly (Massachusetts) | 1,555.44 mi (2,503.25 km) |
