| Duncan to Oxford (Alabama) | 692.50 mi (1,114.47 km) |
| Duncan to Oxford (Mississippi) | 477.92 mi (769.13 km) |
| Duncan to Oxford (Ohio) | 802.69 mi (1,291.80 km) |
| Duncan to Oxnard (California) | 1,210.48 mi (1,948.07 km) |
| Duncan to Oxon Hill (Maryland) | 1,194.62 mi (1,922.55 km) |
| Duncan to Ozark (Alabama) | 742.06 mi (1,194.23 km) |
| Duncan to Ozark (Missouri) | 315.04 mi (507.01 km) |
| Duncan to Pace (Florida) | 681.78 mi (1,097.22 km) |
| Duncan to Pacific Grove (California) | 1,352.98 mi (2,177.41 km) |
| Duncan to Pacifica (California) | 1,383.59 mi (2,226.67 km) |
| Duncan to Paducah (Kentucky) | 548.19 mi (882.22 km) |
| Duncan to Pahrump (Nevada) | 1,023.37 mi (1,646.95 km) |
| Duncan to Painesville (Ohio) | 1,030.36 mi (1,658.20 km) |
| Duncan to Palatine (Illinois) | 747.86 mi (1,203.56 km) |
| Duncan to Palatka (Florida) | 1,008.04 mi (1,622.28 km) |
