| Omagh to Sesimbra | 1,118.82 mi (1,800.56 km) |
| Omagh to Setubal | 1,112.57 mi (1,790.50 km) |
| Omagh to Sever do Vouga | 958.69 mi (1,542.86 km) |
| Omagh to Silves | 1,203.67 mi (1,937.11 km) |
| Omagh to Sines | 1,151.77 mi (1,853.60 km) |
| Omagh to Sintra | 1,095.43 mi (1,762.93 km) |
| Omagh to Sobrado de Paiva | 937.75 mi (1,509.16 km) |
| Omagh to Sobral de Monte Agraco | 1,079.42 mi (1,737.16 km) |
| Omagh to Soure | 1,006.54 mi (1,619.86 km) |
| Omagh to Tabua | 983.77 mi (1,583.22 km) |
| Omagh to Tavira | 1,207.41 mi (1,943.14 km) |
| Omagh to Tomar | 1,037.03 mi (1,668.94 km) |
| Omagh to Tondela | 973.06 mi (1,565.99 km) |
| Omagh to Torre de Moncorvo | 925.19 mi (1,488.94 km) |
| Omagh to Torres Novas | 1,046.52 mi (1,684.20 km) |
