| Harker Heights to Montalegre | 4,821.21 mi (7,758.99 km) |
| Harker Heights to Montemor-o-Novo | 4,891.72 mi (7,872.46 km) |
| Harker Heights to Montemor-o-Velho | 4,825.55 mi (7,765.97 km) |
| Harker Heights to Montijo | 4,857.27 mi (7,817.02 km) |
| Harker Heights to Mortagua | 4,839.61 mi (7,788.60 km) |
| Harker Heights to Moura | 4,944.48 mi (7,957.37 km) |
| Harker Heights to Murtosa | 4,811.98 mi (7,744.13 km) |
| Harker Heights to Nazare | 4,823.02 mi (7,761.91 km) |
| Harker Heights to Nelas | 4,855.58 mi (7,814.30 km) |
| Harker Heights to Obidos | 4,825.43 mi (7,765.79 km) |
| Harker Heights to Odemira | 4,902.29 mi (7,889.47 km) |
| Harker Heights to Odivelas | 4,840.49 mi (7,790.02 km) |
| Harker Heights to Oeiras | 4,836.81 mi (7,784.09 km) |
| Harker Heights to Olhao | 4,958.11 mi (7,979.31 km) |
| Harker Heights to Oliveira de Azemeis | 4,816.54 mi (7,751.48 km) |
