| Denver to Oliveira de Frades | 4,805.72 mi (7,734.07 km) |
| Denver to Oliveira do Bairro | 4,800.18 mi (7,725.15 km) |
| Denver to Oliveira do Hospital | 4,833.81 mi (7,779.26 km) |
| Denver to Ourem | 4,832.05 mi (7,776.43 km) |
| Denver to Ovar | 4,780.52 mi (7,693.51 km) |
| Denver to Pacos de Ferreira | 4,774.54 mi (7,683.89 km) |
| Denver to Palmela | 4,861.15 mi (7,823.27 km) |
| Denver to Paredes | 4,780.03 mi (7,692.72 km) |
| Denver to Paredes de Coura | 4,742.07 mi (7,631.62 km) |
| Denver to Penacova | 4,819.33 mi (7,755.97 km) |
| Denver to Penafiel | 4,781.89 mi (7,695.70 km) |
| Denver to Peniche | 4,809.31 mi (7,739.83 km) |
| Denver to Peso da Regua | 4,805.04 mi (7,732.96 km) |
| Denver to Pinhal Novo | 4,857.94 mi (7,818.10 km) |
| Denver to Pinhel | 4,850.50 mi (7,806.13 km) |
