| Heum to Montemor-o-Novo | 1,627.53 mi (2,619.26 km) |
| Heum to Montemor-o-Velho | 1,542.85 mi (2,482.98 km) |
| Heum to Montijo | 1,640.53 mi (2,640.18 km) |
| Heum to Mortagua | 1,515.97 mi (2,439.71 km) |
| Heum to Moura | 1,643.99 mi (2,645.74 km) |
| Heum to Murtosa | 1,506.54 mi (2,424.53 km) |
| Heum to Nazare | 1,586.95 mi (2,553.95 km) |
| Heum to Nelas | 1,502.10 mi (2,417.40 km) |
| Heum to Obidos | 1,604.12 mi (2,581.59 km) |
| Heum to Odemira | 1,704.14 mi (2,742.55 km) |
| Heum to Odivelas | 1,640.13 mi (2,639.53 km) |
| Heum to Oeiras | 1,649.94 mi (2,655.33 km) |
| Heum to Olhao | 1,722.89 mi (2,772.73 km) |
| Heum to Oliveira de Azemeis | 1,496.25 mi (2,407.99 km) |
| Heum to Oliveira de Frades | 1,497.19 mi (2,409.49 km) |
