| Rietberg to Oliveira do Bairro | 1,119.37 mi (1,801.46 km) |
| Rietberg to Oliveira do Hospital | 1,106.41 mi (1,780.59 km) |
| Rietberg to Ourem | 1,167.94 mi (1,879.61 km) |
| Rietberg to Ovar | 1,105.59 mi (1,779.28 km) |
| Rietberg to Pacos de Ferreira | 1,076.84 mi (1,733.00 km) |
| Rietberg to Palmela | 1,238.14 mi (1,992.59 km) |
| Rietberg to Paredes | 1,077.98 mi (1,734.83 km) |
| Rietberg to Paredes de Coura | 1,049.72 mi (1,689.36 km) |
| Rietberg to Penacova | 1,125.14 mi (1,810.74 km) |
| Rietberg to Penafiel | 1,075.97 mi (1,731.60 km) |
| Rietberg to Peniche | 1,210.77 mi (1,948.55 km) |
| Rietberg to Peso da Regua | 1,060.73 mi (1,707.09 km) |
| Rietberg to Pinhal Novo | 1,235.04 mi (1,987.60 km) |
| Rietberg to Pinhel | 1,057.37 mi (1,701.67 km) |
| Rietberg to Pombal | 1,155.64 mi (1,859.83 km) |
