| Omagh to Centralia (Illinois) | 3,807.69 mi (6,127.88 km) |
| Omagh to Centralia (Washington) | 4,497.07 mi (7,237.33 km) |
| Omagh to Centreville (Virginia) | 3,341.67 mi (5,377.89 km) |
| Omagh to Ceres (California) | 4,958.54 mi (7,980.00 km) |
| Omagh to Cerritos (California) | 5,080.41 mi (8,176.12 km) |
| Omagh to Chalco (Nebraska) | 3,934.53 mi (6,332.01 km) |
| Omagh to Chalmette (Louisiana) | 4,277.71 mi (6,884.31 km) |
| Omagh to Chambersburg (Pennsylvania) | 3,298.83 mi (5,308.95 km) |
| Omagh to Chamblee (Georgia) | 3,853.37 mi (6,201.40 km) |
| Omagh to Champaign (Illinois) | 3,697.71 mi (5,950.88 km) |
| Omagh to Champlin (Minnesota) | 3,642.14 mi (5,861.46 km) |
| Omagh to Chandler (Arizona) | 4,906.00 mi (7,895.45 km) |
| Omagh to Chanhassen (Minnesota) | 3,663.24 mi (5,895.42 km) |
| Omagh to Channahon (Illinois) | 3,634.16 mi (5,848.61 km) |
| Omagh to Channelview (Texas) | 4,484.90 mi (7,217.74 km) |
