| Omagh to Cascais | 1,102.39 mi (1,774.12 km) |
| Omagh to Castelo Branco | 1,020.78 mi (1,642.79 km) |
| Omagh to Castro Daire | 946.35 mi (1,523.00 km) |
| Omagh to Celorico de Basto | 913.07 mi (1,469.45 km) |
| Omagh to Chamusca | 1,054.44 mi (1,696.96 km) |
| Omagh to Chaves | 887.85 mi (1,428.85 km) |
| Omagh to Cinfaes | 932.87 mi (1,501.31 km) |
| Omagh to Coimbra | 994.88 mi (1,601.10 km) |
| Omagh to Condeixa-a-Nova | 1,001.57 mi (1,611.87 km) |
| Omagh to Corroios | 1,107.22 mi (1,781.89 km) |
| Omagh to Coruche | 1,081.68 mi (1,740.80 km) |
| Omagh to Costa de Caparica | 1,105.47 mi (1,779.09 km) |
| Omagh to Covilha | 988.54 mi (1,590.91 km) |
| Omagh to Eiras | 992.73 mi (1,597.64 km) |
| Omagh to Elvas | 1,086.39 mi (1,748.38 km) |
