| Friendswood to Mangualde | 4,802.27 mi (7,728.51 km) |
| Friendswood to Marco de Canavezes | 4,768.64 mi (7,674.38 km) |
| Friendswood to Marinha Grande | 4,766.58 mi (7,671.07 km) |
| Friendswood to Massama | 4,774.87 mi (7,684.41 km) |
| Friendswood to Matosinhos | 4,741.99 mi (7,631.49 km) |
| Friendswood to Mealhada | 4,774.29 mi (7,683.47 km) |
| Friendswood to Melgaco | 4,739.66 mi (7,627.75 km) |
| Friendswood to Melres | 4,759.46 mi (7,659.61 km) |
| Friendswood to Mira | 4,759.15 mi (7,659.12 km) |
| Friendswood to Miranda do Corvo | 4,787.23 mi (7,704.30 km) |
| Friendswood to Mirandela | 4,807.63 mi (7,737.13 km) |
| Friendswood to Mogadouro | 4,833.91 mi (7,779.42 km) |
| Friendswood to Moimenta da Beira | 4,799.79 mi (7,724.52 km) |
| Friendswood to Moita | 4,792.20 mi (7,712.30 km) |
| Friendswood to Moncao | 4,730.53 mi (7,613.04 km) |
