| Omagh to Caño Martin Peña (Puerto Rico) | 3,947.17 mi (6,352.36 km) |
| Omagh to Cañon City (Colorado) | 4,396.62 mi (7,075.67 km) |
| Omagh to Canóvanas (Puerto Rico) | 3,944.82 mi (6,348.57 km) |
| Omagh to Canton (Georgia) | 3,842.49 mi (6,183.89 km) |
| Omagh to Canton (Illinois) | 3,741.99 mi (6,022.16 km) |
| Omagh to Canton (Mississippi) | 4,142.14 mi (6,666.13 km) |
| Omagh to Canton (Ohio) | 3,401.83 mi (5,474.72 km) |
| Omagh to Canyon (Texas) | 4,462.85 mi (7,182.26 km) |
| Omagh to Canyon Lake (California) | 5,064.36 mi (8,150.30 km) |
| Omagh to Canyon Lake (Texas) | 4,600.22 mi (7,403.34 km) |
| Omagh to Cape Coral (Florida) | 4,135.96 mi (6,656.18 km) |
| Omagh to Cape Girardeau (Missouri) | 3,884.41 mi (6,251.35 km) |
| Omagh to Carbondale (Illinois) | 3,851.16 mi (6,197.84 km) |
| Omagh to Carlisle (Pennsylvania) | 3,268.66 mi (5,260.40 km) |
| Omagh to Carlsbad (California) | 5,097.13 mi (8,203.04 km) |
