| Duncan to Naugatuck (Connecticut) | 1,430.32 mi (2,301.88 km) |
| Duncan to Navarre (Florida) | 702.69 mi (1,130.88 km) |
| Duncan to Nederland (Texas) | 390.00 mi (627.65 km) |
| Duncan to Neenah (Wisconsin) | 833.63 mi (1,341.59 km) |
| Duncan to Neosho (Missouri) | 254.73 mi (409.95 km) |
| Duncan to Nesconset (New York) | 1,416.95 mi (2,280.37 km) |
| Duncan to New Albany (Indiana) | 720.52 mi (1,159.56 km) |
| Duncan to New Albany (Ohio) | 914.05 mi (1,471.02 km) |
| Duncan to New Baltimore (Michigan) | 991.95 mi (1,596.39 km) |
| Duncan to New Baltimore (Virginia) | 1,154.64 mi (1,858.21 km) |
| Duncan to New Bedford (Massachusetts) | 1,539.75 mi (2,477.99 km) |
| Duncan to New Berlin (Wisconsin) | 784.88 mi (1,263.14 km) |
| Duncan to New Bern (North Carolina) | 1,181.10 mi (1,900.80 km) |
| Duncan to New Braunfels (Texas) | 334.70 mi (538.65 km) |
| Duncan to New Brighton (Minnesota) | 768.71 mi (1,237.13 km) |
