| Prienai to Montemor-o-Novo | 1,856.92 mi (2,988.42 km) |
| Prienai to Montemor-o-Velho | 1,799.04 mi (2,895.27 km) |
| Prienai to Montijo | 1,880.45 mi (3,026.29 km) |
| Prienai to Mortagua | 1,769.22 mi (2,847.28 km) |
| Prienai to Moura | 1,855.27 mi (2,985.76 km) |
| Prienai to Murtosa | 1,769.82 mi (2,848.25 km) |
| Prienai to Nazare | 1,841.10 mi (2,962.96 km) |
| Prienai to Nelas | 1,750.82 mi (2,817.67 km) |
| Prienai to Obidos | 1,856.42 mi (2,987.62 km) |
| Prienai to Odemira | 1,926.63 mi (3,100.62 km) |
| Prienai to Odivelas | 1,885.46 mi (3,034.35 km) |
| Prienai to Oeiras | 1,895.91 mi (3,051.16 km) |
| Prienai to Olhao | 1,926.89 mi (3,101.03 km) |
| Prienai to Oliveira de Azemeis | 1,758.74 mi (2,830.42 km) |
| Prienai to Oliveira de Frades | 1,753.66 mi (2,822.25 km) |
