| Olgiate Olona to Oliveira do Bairro | 943.44 mi (1,518.32 km) |
| Olgiate Olona to Oliveira do Hospital | 919.10 mi (1,479.14 km) |
| Olgiate Olona to Ourem | 975.79 mi (1,570.38 km) |
| Olgiate Olona to Ovar | 938.66 mi (1,510.62 km) |
| Olgiate Olona to Pacos de Ferreira | 915.72 mi (1,473.71 km) |
| Olgiate Olona to Palmela | 1,030.97 mi (1,659.18 km) |
| Olgiate Olona to Paredes | 914.54 mi (1,471.82 km) |
| Olgiate Olona to Paredes de Coura | 905.45 mi (1,457.18 km) |
| Olgiate Olona to Penacova | 941.46 mi (1,515.13 km) |
| Olgiate Olona to Penafiel | 912.05 mi (1,467.80 km) |
| Olgiate Olona to Peniche | 1,023.03 mi (1,646.41 km) |
| Olgiate Olona to Peso da Regua | 889.46 mi (1,431.45 km) |
| Olgiate Olona to Pinhal Novo | 1,029.12 mi (1,656.21 km) |
| Olgiate Olona to Pinhel | 868.41 mi (1,397.56 km) |
| Olgiate Olona to Pombal | 969.34 mi (1,560.00 km) |
