| Welwyn Garden City to Oliveira de Frades | 854.80 mi (1,375.67 km) |
| Welwyn Garden City to Oliveira do Bairro | 874.16 mi (1,406.82 km) |
| Welwyn Garden City to Oliveira do Hospital | 871.01 mi (1,401.75 km) |
| Welwyn Garden City to Ourem | 930.52 mi (1,497.52 km) |
| Welwyn Garden City to Ovar | 855.06 mi (1,376.09 km) |
| Welwyn Garden City to Pacos de Ferreira | 824.88 mi (1,327.52 km) |
| Welwyn Garden City to Palmela | 1,006.55 mi (1,619.89 km) |
| Welwyn Garden City to Paredes | 827.59 mi (1,331.87 km) |
| Welwyn Garden City to Paredes de Coura | 788.51 mi (1,268.98 km) |
| Welwyn Garden City to Penacova | 885.18 mi (1,424.56 km) |
| Welwyn Garden City to Penafiel | 826.13 mi (1,329.53 km) |
| Welwyn Garden City to Peniche | 966.49 mi (1,555.41 km) |
| Welwyn Garden City to Peso da Regua | 817.90 mi (1,316.29 km) |
| Welwyn Garden City to Pinhal Novo | 1,002.71 mi (1,613.71 km) |
| Welwyn Garden City to Pinhel | 828.39 mi (1,333.17 km) |
