| Omagh to Chantilly (Virginia) | 3,339.66 mi (5,374.66 km) |
| Omagh to Chaparral (New Mexico) | 4,783.33 mi (7,698.02 km) |
| Omagh to Chapel Hill (North Carolina) | 3,544.89 mi (5,704.94 km) |
| Omagh to Charleston (Illinois) | 3,724.76 mi (5,994.43 km) |
| Omagh to Charleston (South Carolina) | 3,736.41 mi (6,013.17 km) |
| Omagh to Charleston (West Virginia) | 3,528.86 mi (5,679.15 km) |
| Omagh to Charlotte (North Carolina) | 3,650.88 mi (5,875.53 km) |
| Omagh to Charlottesville (Virginia) | 3,420.87 mi (5,505.36 km) |
| Omagh to Chaska (Minnesota) | 3,666.73 mi (5,901.04 km) |
| Omagh to Chatham (Illinois) | 3,772.51 mi (6,071.27 km) |
| Omagh to Chattanooga (Tennessee) | 3,830.91 mi (6,165.25 km) |
| Omagh to Cheat Lake (West Virginia) | 3,396.99 mi (5,466.93 km) |
| Omagh to Chelsea (Alabama) | 3,972.69 mi (6,393.43 km) |
| Omagh to Chelsea (Massachusetts) | 2,927.30 mi (4,711.03 km) |
| Omagh to Cheney (Washington) | 4,303.62 mi (6,926.01 km) |
