| Quattro Castella to Montemor-o-Novo | 1,046.45 mi (1,684.10 km) |
| Quattro Castella to Montemor-o-Velho | 1,021.85 mi (1,644.50 km) |
| Quattro Castella to Montijo | 1,077.60 mi (1,734.22 km) |
| Quattro Castella to Mortagua | 992.75 mi (1,597.68 km) |
| Quattro Castella to Moura | 1,028.71 mi (1,655.54 km) |
| Quattro Castella to Murtosa | 1,004.20 mi (1,616.11 km) |
| Quattro Castella to Nazare | 1,056.69 mi (1,700.57 km) |
| Quattro Castella to Nelas | 971.96 mi (1,564.22 km) |
| Quattro Castella to Obidos | 1,068.37 mi (1,719.37 km) |
| Quattro Castella to Odemira | 1,103.59 mi (1,776.05 km) |
| Quattro Castella to Odivelas | 1,087.35 mi (1,749.92 km) |
| Quattro Castella to Oeiras | 1,097.35 mi (1,766.01 km) |
| Quattro Castella to Olhao | 1,088.41 mi (1,751.63 km) |
| Quattro Castella to Oliveira de Azemeis | 993.78 mi (1,599.33 km) |
| Quattro Castella to Oliveira de Frades | 982.79 mi (1,581.64 km) |
