| Rickmansworth to Montalegre | 760.85 mi (1,224.47 km) |
| Rickmansworth to Montemor-o-Novo | 972.33 mi (1,564.82 km) |
| Rickmansworth to Montemor-o-Velho | 884.31 mi (1,423.16 km) |
| Rickmansworth to Montijo | 983.35 mi (1,582.56 km) |
| Rickmansworth to Mortagua | 858.02 mi (1,380.84 km) |
| Rickmansworth to Moura | 992.65 mi (1,597.51 km) |
| Rickmansworth to Murtosa | 847.49 mi (1,363.90 km) |
| Rickmansworth to Nazare | 928.33 mi (1,494.00 km) |
| Rickmansworth to Nelas | 844.97 mi (1,359.85 km) |
| Rickmansworth to Obidos | 945.59 mi (1,521.79 km) |
| Rickmansworth to Odemira | 1,049.34 mi (1,688.75 km) |
| Rickmansworth to Odivelas | 982.18 mi (1,580.67 km) |
| Rickmansworth to Oeiras | 991.84 mi (1,596.22 km) |
| Rickmansworth to Olhao | 1,072.05 mi (1,725.30 km) |
| Rickmansworth to Oliveira de Azemeis | 837.35 mi (1,347.59 km) |
