| Duncan to Petersburg (Virginia) | 1,161.72 mi (1,869.60 km) |
| Duncan to Pflugerville (Texas) | 283.16 mi (455.70 km) |
| Duncan to Pharr (Texas) | 578.69 mi (931.31 km) |
| Duncan to Phelan (California) | 1,114.64 mi (1,793.83 km) |
| Duncan to Phenix City (Alabama) | 756.27 mi (1,217.09 km) |
| Duncan to Philadelphia (Pennsylvania) | 1,304.40 mi (2,099.23 km) |
| Duncan to Phillipsburg (New Jersey) | 1,310.57 mi (2,109.16 km) |
| Duncan to Phoenix (Arizona) | 813.08 mi (1,308.53 km) |
| Duncan to Phoenixville (Pennsylvania) | 1,285.83 mi (2,069.34 km) |
| Duncan to Picayune (Mississippi) | 554.32 mi (892.09 km) |
| Duncan to Pickerington (Ohio) | 910.46 mi (1,465.24 km) |
| Duncan to Pico Rivera (California) | 1,150.30 mi (1,851.23 km) |
| Duncan to Piedmont (California) | 1,370.48 mi (2,205.57 km) |
| Duncan to Pierre (South Dakota) | 691.32 mi (1,112.58 km) |
| Duncan to Pike Creek Valley (Delaware) | 1,271.68 mi (2,046.58 km) |
