| Gunbarrel to Montalegre | 4,777.73 mi (7,689.01 km) |
| Gunbarrel to Montemor-o-Novo | 4,888.67 mi (7,867.55 km) |
| Gunbarrel to Montemor-o-Velho | 4,806.80 mi (7,735.80 km) |
| Gunbarrel to Montijo | 4,857.58 mi (7,817.52 km) |
| Gunbarrel to Mortagua | 4,815.25 mi (7,749.39 km) |
| Gunbarrel to Moura | 4,943.29 mi (7,955.45 km) |
| Gunbarrel to Murtosa | 4,786.10 mi (7,702.49 km) |
| Gunbarrel to Nazare | 4,813.19 mi (7,746.08 km) |
| Gunbarrel to Nelas | 4,828.17 mi (7,770.18 km) |
| Gunbarrel to Obidos | 4,819.01 mi (7,755.45 km) |
| Gunbarrel to Odemira | 4,914.27 mi (7,908.75 km) |
| Gunbarrel to Odivelas | 4,841.04 mi (7,790.90 km) |
| Gunbarrel to Oeiras | 4,839.40 mi (7,788.26 km) |
| Gunbarrel to Olhao | 4,972.20 mi (8,001.98 km) |
| Gunbarrel to Oliveira de Azemeis | 4,788.54 mi (7,706.41 km) |
