| Fort Collins to Oliveira de Frades | 4,781.52 mi (7,695.10 km) |
| Fort Collins to Oliveira do Bairro | 4,776.26 mi (7,686.64 km) |
| Fort Collins to Oliveira do Hospital | 4,809.73 mi (7,740.52 km) |
| Fort Collins to Ourem | 4,808.80 mi (7,739.02 km) |
| Fort Collins to Ovar | 4,756.39 mi (7,654.66 km) |
| Fort Collins to Pacos de Ferreira | 4,750.01 mi (7,644.40 km) |
| Fort Collins to Palmela | 4,838.86 mi (7,787.40 km) |
| Fort Collins to Paredes | 4,755.52 mi (7,653.27 km) |
| Fort Collins to Paredes de Coura | 4,717.11 mi (7,591.46 km) |
| Fort Collins to Penacova | 4,795.50 mi (7,717.61 km) |
| Fort Collins to Penafiel | 4,757.35 mi (7,656.22 km) |
| Fort Collins to Peniche | 4,786.62 mi (7,703.33 km) |
| Fort Collins to Peso da Regua | 4,780.33 mi (7,693.19 km) |
| Fort Collins to Pinhal Novo | 4,835.61 mi (7,782.17 km) |
| Fort Collins to Pinhel | 4,825.79 mi (7,766.35 km) |
