| Groningen to Oliveira do Bairro | 1,125.08 mi (1,810.64 km) |
| Groningen to Oliveira do Hospital | 1,115.92 mi (1,795.89 km) |
| Groningen to Ourem | 1,177.24 mi (1,894.58 km) |
| Groningen to Ovar | 1,108.99 mi (1,784.75 km) |
| Groningen to Pacos de Ferreira | 1,079.36 mi (1,737.06 km) |
| Groningen to Palmela | 1,250.36 mi (2,012.26 km) |
| Groningen to Paredes | 1,081.16 mi (1,739.95 km) |
| Groningen to Paredes de Coura | 1,048.09 mi (1,686.74 km) |
| Groningen to Penacova | 1,133.02 mi (1,823.42 km) |
| Groningen to Penafiel | 1,079.35 mi (1,737.05 km) |
| Groningen to Peniche | 1,217.66 mi (1,959.64 km) |
| Groningen to Peso da Regua | 1,066.80 mi (1,716.85 km) |
| Groningen to Pinhal Novo | 1,246.94 mi (2,006.75 km) |
| Groningen to Pinhel | 1,068.85 mi (1,720.14 km) |
| Groningen to Pombal | 1,163.49 mi (1,872.45 km) |
