| Grinon to Oliveira de Frades | 230.36 mi (370.73 km) |
| Grinon to Oliveira do Bairro | 245.64 mi (395.32 km) |
| Grinon to Oliveira do Hospital | 211.69 mi (340.68 km) |
| Grinon to Ourem | 252.91 mi (407.02 km) |
| Grinon to Ovar | 255.10 mi (410.55 km) |
| Grinon to Pacos de Ferreira | 248.96 mi (400.66 km) |
| Grinon to Palmela | 292.71 mi (471.06 km) |
| Grinon to Paredes | 244.41 mi (393.34 km) |
| Grinon to Paredes de Coura | 271.96 mi (437.68 km) |
| Grinon to Penacova | 233.81 mi (376.29 km) |
| Grinon to Penafiel | 242.04 mi (389.53 km) |
| Grinon to Peniche | 298.92 mi (481.07 km) |
| Grinon to Peso da Regua | 215.87 mi (347.40 km) |
| Grinon to Pinhal Novo | 291.58 mi (469.26 km) |
| Grinon to Pinhel | 173.47 mi (279.17 km) |
