| Castleford to Oliveira de Frades | 952.53 mi (1,532.94 km) |
| Castleford to Oliveira do Bairro | 970.68 mi (1,562.16 km) |
| Castleford to Oliveira do Hospital | 971.41 mi (1,563.33 km) |
| Castleford to Ourem | 1,028.92 mi (1,655.89 km) |
| Castleford to Ovar | 949.84 mi (1,528.63 km) |
| Castleford to Pacos de Ferreira | 919.79 mi (1,480.25 km) |
| Castleford to Palmela | 1,105.76 mi (1,779.55 km) |
| Castleford to Paredes | 923.08 mi (1,485.55 km) |
| Castleford to Paredes de Coura | 880.32 mi (1,416.73 km) |
| Castleford to Penacova | 983.54 mi (1,582.85 km) |
| Castleford to Penafiel | 921.89 mi (1,483.63 km) |
| Castleford to Peniche | 1,061.50 mi (1,708.33 km) |
| Castleford to Peso da Regua | 916.68 mi (1,475.26 km) |
| Castleford to Pinhal Novo | 1,101.71 mi (1,773.03 km) |
| Castleford to Pinhel | 932.08 mi (1,500.04 km) |
