| Harker Heights to Mangualde | 4,857.32 mi (7,817.10 km) |
| Harker Heights to Marco de Canavezes | 4,822.34 mi (7,760.80 km) |
| Harker Heights to Marinha Grande | 4,825.26 mi (7,765.50 km) |
| Harker Heights to Massama | 4,836.78 mi (7,784.04 km) |
| Harker Heights to Matosinhos | 4,796.20 mi (7,718.74 km) |
| Harker Heights to Mealhada | 4,830.64 mi (7,774.16 km) |
| Harker Heights to Melgaco | 4,790.68 mi (7,709.86 km) |
| Harker Heights to Melres | 4,813.74 mi (7,746.96 km) |
| Harker Heights to Mira | 4,815.62 mi (7,750.00 km) |
| Harker Heights to Miranda do Corvo | 4,844.30 mi (7,796.15 km) |
| Harker Heights to Mirandela | 4,859.52 mi (7,820.64 km) |
| Harker Heights to Mogadouro | 4,885.80 mi (7,862.94 km) |
| Harker Heights to Moimenta da Beira | 4,853.59 mi (7,811.09 km) |
| Harker Heights to Moita | 4,854.14 mi (7,811.98 km) |
| Harker Heights to Moncao | 4,781.87 mi (7,695.68 km) |
