| Grantham to Oliveira de Frades | 914.19 mi (1,471.25 km) |
| Grantham to Oliveira do Bairro | 932.95 mi (1,501.43 km) |
| Grantham to Oliveira do Hospital | 931.83 mi (1,499.64 km) |
| Grantham to Ourem | 990.38 mi (1,593.86 km) |
| Grantham to Ovar | 912.90 mi (1,469.17 km) |
| Grantham to Pacos de Ferreira | 882.73 mi (1,420.62 km) |
| Grantham to Palmela | 1,066.93 mi (1,717.05 km) |
| Grantham to Paredes | 885.75 mi (1,425.48 km) |
| Grantham to Paredes de Coura | 844.64 mi (1,359.31 km) |
| Grantham to Penacova | 944.95 mi (1,520.75 km) |
| Grantham to Penafiel | 884.43 mi (1,423.36 km) |
| Grantham to Peniche | 1,024.62 mi (1,648.96 km) |
| Grantham to Peso da Regua | 877.79 mi (1,412.67 km) |
| Grantham to Pinhal Novo | 1,062.97 mi (1,710.69 km) |
| Grantham to Pinhel | 890.88 mi (1,433.73 km) |
