| Duncan to Chicago (Illinois) | 749.39 mi (1,206.03 km) |
| Duncan to Minneapolis (Minnesota) | 761.04 mi (1,224.77 km) |
| Duncan to Atlanta (Georgia) | 773.17 mi (1,244.30 km) |
| Duncan to Phoenix (Arizona) | 813.08 mi (1,308.53 km) |
| Duncan to Detroit (Michigan) | 965.46 mi (1,553.75 km) |
| Duncan to Las Vegas (Nevada) | 982.60 mi (1,581.34 km) |
| Duncan to Tampa (Florida) | 1,018.20 mi (1,638.63 km) |
| Duncan to San Diego (California) | 1,108.50 mi (1,783.95 km) |
| Duncan to Riverside (California) | 1,111.36 mi (1,788.56 km) |
| Duncan to Los Angeles (California) | 1,167.24 mi (1,878.50 km) |
| Duncan to Washington (District of Columbia) | 1,193.40 mi (1,920.60 km) |
| Duncan to Miami (Florida) | 1,216.09 mi (1,957.11 km) |
| Duncan to Baltimore (Maryland) | 1,218.83 mi (1,961.52 km) |
| Duncan to Philadelphia (Pennsylvania) | 1,304.40 mi (2,099.23 km) |
| Duncan to Brooklyn (New York) | 1,373.48 mi (2,210.41 km) |
| Duncan to New York (New York) | 1,375.30 mi (2,213.33 km) |
| Duncan to San Francisco (California) | 1,382.04 mi (2,224.18 km) |
| Duncan to Queens (New York) | 1,382.54 mi (2,224.99 km) |
| Duncan to Portland (Oregon) | 1,503.62 mi (2,419.84 km) |
| Duncan to Boston (Massachusetts) | 1,540.85 mi (2,479.76 km) |
| Duncan to Seattle (Washington) | 1,548.66 mi (2,492.33 km) |
| Duncan to Dallas (Texas) | 137.78 mi (221.74 km) |
| Duncan to Houston (Texas) | 360.35 mi (579.92 km) |
| Duncan to St. Louis (Missouri) | 511.00 mi (822.37 km) |
| Duncan to Denver (Colorado) | 525.80 mi (846.20 km) |
