| Omagh to Dardenne Prairie (Missouri) | 3,856.66 mi (6,206.69 km) |
| Omagh to Darien (Illinois) | 3,608.32 mi (5,807.02 km) |
| Omagh to Davenport (Iowa) | 3,714.67 mi (5,978.18 km) |
| Omagh to Davidson (North Carolina) | 3,637.02 mi (5,853.22 km) |
| Omagh to Davie (Florida) | 4,097.53 mi (6,594.34 km) |
| Omagh to Davis (California) | 4,926.99 mi (7,929.23 km) |
| Omagh to Dayton (Nevada) | 4,820.97 mi (7,758.60 km) |
| Omagh to Dayton (Ohio) | 3,559.19 mi (5,727.96 km) |
| Omagh to Daytona Beach (Florida) | 3,966.50 mi (6,383.46 km) |
| Omagh to De Pere (Wisconsin) | 3,485.55 mi (5,609.45 km) |
| Omagh to De Witt (New York) | 3,096.43 mi (4,983.23 km) |
| Omagh to Dearborn (Michigan) | 3,402.26 mi (5,475.40 km) |
| Omagh to Dearborn Heights (Michigan) | 3,404.51 mi (5,479.02 km) |
| Omagh to DeBary (Florida) | 3,992.01 mi (6,424.52 km) |
| Omagh to Decatur (Alabama) | 3,923.40 mi (6,314.11 km) |
