| Giessen to Oliveira do Bairro | 1,078.76 mi (1,736.10 km) |
| Giessen to Oliveira do Hospital | 1,063.59 mi (1,711.68 km) |
| Giessen to Ourem | 1,124.88 mi (1,810.32 km) |
| Giessen to Ovar | 1,066.47 mi (1,716.32 km) |
| Giessen to Pacos de Ferreira | 1,038.44 mi (1,671.22 km) |
| Giessen to Palmela | 1,192.99 mi (1,919.93 km) |
| Giessen to Paredes | 1,039.17 mi (1,672.39 km) |
| Giessen to Paredes de Coura | 1,014.08 mi (1,632.01 km) |
| Giessen to Penacova | 1,083.18 mi (1,743.22 km) |
| Giessen to Penafiel | 1,037.05 mi (1,668.97 km) |
| Giessen to Peniche | 1,168.92 mi (1,881.20 km) |
| Giessen to Peso da Regua | 1,020.29 mi (1,642.00 km) |
| Giessen to Pinhal Novo | 1,190.09 mi (1,915.26 km) |
| Giessen to Pinhel | 1,013.69 mi (1,631.37 km) |
| Giessen to Pombal | 1,113.52 mi (1,792.04 km) |
