| Olesno to Montemor-o-Novo | 1,542.62 mi (2,482.61 km) |
| Olesno to Montemor-o-Velho | 1,493.82 mi (2,404.06 km) |
| Olesno to Montijo | 1,568.65 mi (2,524.49 km) |
| Olesno to Mortagua | 1,463.79 mi (2,355.75 km) |
| Olesno to Moura | 1,536.22 mi (2,472.30 km) |
| Olesno to Murtosa | 1,467.55 mi (2,361.80 km) |
| Olesno to Nazare | 1,534.30 mi (2,469.23 km) |
| Olesno to Nelas | 1,444.43 mi (2,324.59 km) |
| Olesno to Obidos | 1,548.74 mi (2,492.45 km) |
| Olesno to Odemira | 1,609.23 mi (2,589.80 km) |
| Olesno to Odivelas | 1,575.12 mi (2,534.90 km) |
| Olesno to Oeiras | 1,585.54 mi (2,551.68 km) |
| Olesno to Olhao | 1,604.86 mi (2,582.77 km) |
| Olesno to Oliveira de Azemeis | 1,456.50 mi (2,344.00 km) |
| Olesno to Oliveira de Frades | 1,449.63 mi (2,332.95 km) |
