| Houten to Montemor-o-Novo | 1,126.36 mi (1,812.70 km) |
| Houten to Montemor-o-Velho | 1,051.06 mi (1,691.52 km) |
| Houten to Montijo | 1,143.42 mi (1,840.15 km) |
| Houten to Mortagua | 1,022.52 mi (1,645.59 km) |
| Houten to Moura | 1,137.08 mi (1,829.96 km) |
| Houten to Murtosa | 1,017.38 mi (1,637.31 km) |
| Houten to Nazare | 1,094.90 mi (1,762.07 km) |
| Houten to Nelas | 1,006.56 mi (1,619.90 km) |
| Houten to Obidos | 1,111.52 mi (1,788.82 km) |
| Houten to Odemira | 1,201.53 mi (1,933.67 km) |
| Houten to Odivelas | 1,145.13 mi (1,842.91 km) |
| Houten to Oeiras | 1,155.33 mi (1,859.32 km) |
| Houten to Olhao | 1,214.74 mi (1,954.94 km) |
| Houten to Oliveira de Azemeis | 1,006.58 mi (1,619.93 km) |
| Houten to Oliveira de Frades | 1,004.85 mi (1,617.15 km) |
