| Duncan to Glenview (Illinois) | 754.86 mi (1,214.83 km) |
| Duncan to Gloucester (Massachusetts) | 1,564.88 mi (2,518.43 km) |
| Duncan to Gloucester City (New Jersey) | 1,303.97 mi (2,098.54 km) |
| Duncan to Gloucester Point (Virginia) | 1,210.69 mi (1,948.41 km) |
| Duncan to Gloversville (New York) | 1,392.69 mi (2,241.32 km) |
| Duncan to Godfrey (Illinois) | 524.21 mi (843.63 km) |
| Duncan to Gold Canyon (Arizona) | 777.48 mi (1,251.24 km) |
| Duncan to Golden (Colorado) | 538.45 mi (866.55 km) |
| Duncan to Golden Gate (Florida) | 1,123.95 mi (1,808.82 km) |
| Duncan to Golden Glades (Florida) | 1,211.58 mi (1,949.85 km) |
| Duncan to Golden Valley (Minnesota) | 761.22 mi (1,225.06 km) |
| Duncan to Goldenrod (Florida) | 1,059.43 mi (1,704.99 km) |
| Duncan to Goldsboro (North Carolina) | 1,129.25 mi (1,817.35 km) |
| Duncan to Goleta (California) | 1,246.90 mi (2,006.70 km) |
| Duncan to Gonzales (Louisiana) | 505.89 mi (814.15 km) |
