| Duncan to Lake Grove (New York) | 1,418.92 mi (2,283.53 km) |
| Duncan to Lake Havasu City (Arizona) | 932.01 mi (1,499.92 km) |
| Duncan to Lake Hopatcong (New Jersey) | 1,343.68 mi (2,162.44 km) |
| Duncan to Lake in the Hills (Illinois) | 739.60 mi (1,190.28 km) |
| Duncan to Lake Jackson (Texas) | 406.00 mi (653.40 km) |
| Duncan to Lake Los Angeles (California) | 1,130.98 mi (1,820.14 km) |
| Duncan to Lake Magdalene (Florida) | 1,013.16 mi (1,630.53 km) |
| Duncan to Lake Mary (Florida) | 1,052.44 mi (1,693.73 km) |
| Duncan to Lake Monticello (Virginia) | 1,114.39 mi (1,793.44 km) |
| Duncan to Lake Morton-Berrydale (Washington) | 1,530.48 mi (2,463.07 km) |
| Duncan to Lake Norman of Catawba (North Carolina) | 959.41 mi (1,544.01 km) |
| Duncan to Lake Oswego (Oregon) | 1,502.75 mi (2,418.44 km) |
| Duncan to Lake Ridge (Virginia) | 1,175.82 mi (1,892.30 km) |
| Duncan to Lake Ronkonkoma (New York) | 1,418.78 mi (2,283.31 km) |
| Duncan to Lake Shore (Maryland) | 1,223.45 mi (1,968.96 km) |
