| Arta to Montemor-o-Novo | 1,563.77 mi (2,516.65 km) |
| Arta to Montemor-o-Velho | 1,572.26 mi (2,530.31 km) |
| Arta to Montijo | 1,599.58 mi (2,574.27 km) |
| Arta to Mortagua | 1,546.56 mi (2,488.94 km) |
| Arta to Moura | 1,529.88 mi (2,462.11 km) |
| Arta to Murtosa | 1,565.25 mi (2,519.02 km) |
| Arta to Nazare | 1,597.77 mi (2,571.36 km) |
| Arta to Nelas | 1,525.91 mi (2,455.71 km) |
| Arta to Obidos | 1,605.16 mi (2,583.25 km) |
| Arta to Odemira | 1,601.07 mi (2,576.68 km) |
| Arta to Odivelas | 1,613.04 mi (2,595.93 km) |
| Arta to Oeiras | 1,621.66 mi (2,609.81 km) |
| Arta to Olhao | 1,567.89 mi (2,523.28 km) |
| Arta to Oliveira de Azemeis | 1,556.28 mi (2,504.60 km) |
| Arta to Oliveira de Frades | 1,541.91 mi (2,481.47 km) |
