| Olkusz to Montemor-o-Novo | 1,574.55 mi (2,534.00 km) |
| Olkusz to Montemor-o-Velho | 1,529.35 mi (2,461.24 km) |
| Olkusz to Montijo | 1,601.53 mi (2,577.41 km) |
| Olkusz to Mortagua | 1,499.33 mi (2,412.94 km) |
| Olkusz to Moura | 1,566.11 mi (2,520.40 km) |
| Olkusz to Murtosa | 1,504.18 mi (2,420.74 km) |
| Olkusz to Nazare | 1,569.17 mi (2,525.33 km) |
| Olkusz to Nelas | 1,479.68 mi (2,381.32 km) |
| Olkusz to Obidos | 1,583.24 mi (2,547.97 km) |
| Olkusz to Odemira | 1,639.69 mi (2,638.83 km) |
| Olkusz to Odivelas | 1,608.55 mi (2,588.72 km) |
| Olkusz to Oeiras | 1,618.94 mi (2,605.44 km) |
| Olkusz to Olhao | 1,633.19 mi (2,628.37 km) |
| Olkusz to Oliveira de Azemeis | 1,493.16 mi (2,403.00 km) |
| Olkusz to Oliveira de Frades | 1,485.69 mi (2,390.99 km) |
