| Omagh to Mangualde | 966.57 mi (1,555.54 km) |
| Omagh to Marco de Canavezes | 927.15 mi (1,492.11 km) |
| Omagh to Marinha Grande | 1,028.17 mi (1,654.68 km) |
| Omagh to Massama | 1,097.89 mi (1,766.89 km) |
| Omagh to Matosinhos | 928.56 mi (1,494.38 km) |
| Omagh to Mealhada | 983.05 mi (1,582.06 km) |
| Omagh to Melgaco | 862.97 mi (1,388.81 km) |
| Omagh to Melres | 935.76 mi (1,505.95 km) |
| Omagh to Mira | 980.40 mi (1,577.79 km) |
| Omagh to Miranda do Corvo | 1,002.32 mi (1,613.08 km) |
| Omagh to Mirandela | 905.46 mi (1,457.20 km) |
| Omagh to Mogadouro | 916.33 mi (1,474.68 km) |
| Omagh to Moimenta da Beira | 940.50 mi (1,513.59 km) |
| Omagh to Moita | 1,104.19 mi (1,777.03 km) |
| Omagh to Moncao | 866.51 mi (1,394.52 km) |
