| Duncan to Holiday (Florida) | 995.82 mi (1,602.62 km) |
| Duncan to Holiday City-Berkeley (New Jersey) | 1,348.63 mi (2,170.40 km) |
| Duncan to Holladay (Utah) | 869.04 mi (1,398.59 km) |
| Duncan to Holland (Michigan) | 852.91 mi (1,372.63 km) |
| Duncan to Hollins (Virginia) | 1,021.94 mi (1,644.65 km) |
| Duncan to Hollister (California) | 1,323.62 mi (2,130.16 km) |
| Duncan to Holly Hill (Florida) | 1,053.76 mi (1,695.86 km) |
| Duncan to Holly Springs (Georgia) | 766.31 mi (1,233.26 km) |
| Duncan to Holly Springs (North Carolina) | 1,079.74 mi (1,737.67 km) |
| Duncan to Hollywood (Florida) | 1,208.87 mi (1,945.49 km) |
| Duncan to Holmen (Wisconsin) | 741.89 mi (1,193.95 km) |
| Duncan to Holt (Michigan) | 912.56 mi (1,468.62 km) |
| Duncan to Holtsville (New York) | 1,422.09 mi (2,288.63 km) |
| Duncan to Holyoke (Massachusetts) | 1,461.54 mi (2,352.12 km) |
| Duncan to Home Gardens (California) | 1,118.55 mi (1,800.13 km) |
