| Duncan to Springfield (Missouri) | 317.45 mi (510.88 km) |
| Duncan to Springfield (Ohio) | 860.29 mi (1,384.50 km) |
| Duncan to Springfield (Oregon) | 1,484.38 mi (2,388.88 km) |
| Duncan to Springfield (Tennessee) | 635.55 mi (1,022.82 km) |
| Duncan to Springfield (Virginia) | 1,183.28 mi (1,904.30 km) |
| Duncan to Springville (Utah) | 845.46 mi (1,360.63 km) |
| Duncan to St. Albans (West Virginia) | 931.79 mi (1,499.57 km) |
| Duncan to St. Andrews (South Carolina) | 959.35 mi (1,543.92 km) |
| Duncan to St. Ann (Missouri) | 507.79 mi (817.21 km) |
| Duncan to St. Augustine (Florida) | 1,021.16 mi (1,643.39 km) |
| Duncan to St. Charles (Illinois) | 728.47 mi (1,172.35 km) |
| Duncan to St. Charles (Missouri) | 504.56 mi (812.01 km) |
| Duncan to St. Clair Shores (Michigan) | 978.32 mi (1,574.45 km) |
| Duncan to St. Cloud (Florida) | 1,072.15 mi (1,725.46 km) |
| Duncan to St. Cloud (Minnesota) | 784.79 mi (1,262.99 km) |
