| Waltham Cross to Montalegre | 773.11 mi (1,244.20 km) |
| Waltham Cross to Montemor-o-Novo | 983.50 mi (1,582.79 km) |
| Waltham Cross to Montemor-o-Velho | 896.48 mi (1,442.75 km) |
| Waltham Cross to Montijo | 995.06 mi (1,601.40 km) |
| Waltham Cross to Mortagua | 869.95 mi (1,400.05 km) |
| Waltham Cross to Moura | 1,003.01 mi (1,614.18 km) |
| Waltham Cross to Murtosa | 859.89 mi (1,383.86 km) |
| Waltham Cross to Nazare | 940.54 mi (1,513.65 km) |
| Waltham Cross to Nelas | 856.62 mi (1,378.60 km) |
| Waltham Cross to Obidos | 957.77 mi (1,541.38 km) |
| Waltham Cross to Odemira | 1,060.44 mi (1,706.62 km) |
| Waltham Cross to Odivelas | 994.14 mi (1,599.92 km) |
| Waltham Cross to Oeiras | 1,003.86 mi (1,615.56 km) |
| Waltham Cross to Olhao | 1,082.36 mi (1,741.89 km) |
| Waltham Cross to Oliveira de Azemeis | 849.68 mi (1,367.43 km) |
