| Difficult Run to Montalegre | 3,564.27 mi (5,736.14 km) |
| Difficult Run to Montemor-o-Novo | 3,627.55 mi (5,837.98 km) |
| Difficult Run to Montemor-o-Velho | 3,563.77 mi (5,735.34 km) |
| Difficult Run to Montijo | 3,592.82 mi (5,782.08 km) |
| Difficult Run to Mortagua | 3,578.72 mi (5,759.40 km) |
| Difficult Run to Moura | 3,679.98 mi (5,922.35 km) |
| Difficult Run to Murtosa | 3,551.48 mi (5,715.55 km) |
| Difficult Run to Nazare | 3,559.92 mi (5,729.14 km) |
| Difficult Run to Nelas | 3,595.17 mi (5,785.86 km) |
| Difficult Run to Obidos | 3,561.86 mi (5,732.27 km) |
| Difficult Run to Odemira | 3,636.67 mi (5,852.65 km) |
| Difficult Run to Odivelas | 3,576.05 mi (5,755.09 km) |
| Difficult Run to Oeiras | 3,572.16 mi (5,748.84 km) |
| Difficult Run to Olhao | 3,692.26 mi (5,942.11 km) |
| Difficult Run to Oliveira de Azemeis | 3,556.41 mi (5,723.50 km) |
