| Grottaferrata to Oliveira do Bairro | 1,102.15 mi (1,773.74 km) |
| Grottaferrata to Oliveira do Hospital | 1,071.55 mi (1,724.49 km) |
| Grottaferrata to Ourem | 1,119.05 mi (1,800.93 km) |
| Grottaferrata to Ovar | 1,104.42 mi (1,777.39 km) |
| Grottaferrata to Pacos de Ferreira | 1,087.82 mi (1,750.67 km) |
| Grottaferrata to Palmela | 1,157.10 mi (1,862.18 km) |
| Grottaferrata to Paredes | 1,085.12 mi (1,746.33 km) |
| Grottaferrata to Paredes de Coura | 1,090.07 mi (1,754.30 km) |
| Grottaferrata to Penacova | 1,094.51 mi (1,761.44 km) |
| Grottaferrata to Penafiel | 1,082.52 mi (1,742.15 km) |
| Grottaferrata to Peniche | 1,165.60 mi (1,875.85 km) |
| Grottaferrata to Peso da Regua | 1,056.90 mi (1,700.92 km) |
| Grottaferrata to Pinhal Novo | 1,156.46 mi (1,861.15 km) |
| Grottaferrata to Pinhel | 1,024.88 mi (1,649.39 km) |
| Grottaferrata to Pombal | 1,117.76 mi (1,798.86 km) |
