| Ariccia to Montemor-o-Novo | 1,119.61 mi (1,801.85 km) |
| Ariccia to Montemor-o-Velho | 1,116.54 mi (1,796.89 km) |
| Ariccia to Montijo | 1,154.09 mi (1,857.34 km) |
| Ariccia to Mortagua | 1,089.51 mi (1,753.40 km) |
| Ariccia to Moura | 1,091.56 mi (1,756.69 km) |
| Ariccia to Murtosa | 1,106.15 mi (1,780.18 km) |
| Ariccia to Nazare | 1,145.40 mi (1,843.34 km) |
| Ariccia to Nelas | 1,068.63 mi (1,719.79 km) |
| Ariccia to Obidos | 1,154.35 mi (1,857.75 km) |
| Ariccia to Odemira | 1,165.24 mi (1,875.28 km) |
| Ariccia to Odivelas | 1,166.32 mi (1,877.01 km) |
| Ariccia to Oeiras | 1,175.55 mi (1,891.87 km) |
| Ariccia to Olhao | 1,139.15 mi (1,833.29 km) |
| Ariccia to Oliveira de Azemeis | 1,096.68 mi (1,764.94 km) |
| Ariccia to Oliveira de Frades | 1,083.20 mi (1,743.23 km) |
