| Horizon West to Montalegre | 4,144.91 mi (6,670.60 km) |
| Horizon West to Montemor-o-Novo | 4,174.49 mi (6,718.19 km) |
| Horizon West to Montemor-o-Velho | 4,125.35 mi (6,639.11 km) |
| Horizon West to Montijo | 4,138.18 mi (6,659.76 km) |
| Horizon West to Mortagua | 4,144.20 mi (6,669.45 km) |
| Horizon West to Moura | 4,223.69 mi (6,797.37 km) |
| Horizon West to Murtosa | 4,119.06 mi (6,628.98 km) |
| Horizon West to Nazare | 4,114.56 mi (6,621.75 km) |
| Horizon West to Nelas | 4,162.47 mi (6,698.84 km) |
| Horizon West to Obidos | 4,113.70 mi (6,620.36 km) |
| Horizon West to Odemira | 4,171.02 mi (6,712.61 km) |
| Horizon West to Odivelas | 4,121.78 mi (6,633.36 km) |
| Horizon West to Oeiras | 4,116.36 mi (6,624.64 km) |
| Horizon West to Olhao | 4,223.07 mi (6,796.37 km) |
| Horizon West to Oliveira de Azemeis | 4,125.48 mi (6,639.31 km) |
