| Omagh to Accokeek (Maryland) | 3,332.30 mi (5,362.82 km) |
| Omagh to Acworth (Georgia) | 3,859.19 mi (6,210.76 km) |
| Omagh to Ada (Oklahoma) | 4,281.78 mi (6,890.86 km) |
| Omagh to Addison (Illinois) | 3,600.41 mi (5,794.30 km) |
| Omagh to Addison (Texas) | 4,382.71 mi (7,053.30 km) |
| Omagh to Adelanto (California) | 5,019.42 mi (8,077.98 km) |
| Omagh to Adelphi (Maryland) | 3,315.38 mi (5,335.59 km) |
| Omagh to Adrian (Michigan) | 3,453.00 mi (5,557.07 km) |
| Omagh to Affton (Missouri) | 3,851.69 mi (6,198.69 km) |
| Omagh to Agoura Hills (California) | 5,086.58 mi (8,186.06 km) |
| Omagh to Aguadilla (Puerto Rico) | 3,989.51 mi (6,420.49 km) |
| Omagh to Aiken (South Carolina) | 3,770.02 mi (6,067.26 km) |
| Omagh to Akron (Ohio) | 3,395.05 mi (5,463.80 km) |
| Omagh to Alabaster (Alabama) | 3,985.62 mi (6,414.24 km) |
| Omagh to Alachua (Florida) | 3,991.61 mi (6,423.88 km) |
