| Penafiel to Octeville | 664.41 mi (1,069.26 km) |
| Penafiel to Oignies | 837.35 mi (1,347.59 km) |
| Penafiel to Oissel | 722.60 mi (1,162.91 km) |
| Penafiel to Olivet | 679.55 mi (1,093.63 km) |
| Penafiel to Ollioules | 734.89 mi (1,182.70 km) |
| Penafiel to Olonne-sur-Mer | 490.38 mi (789.18 km) |
| Penafiel to Oloron-Sainte-Marie | 416.09 mi (669.63 km) |
| Penafiel to Onet Village | 592.62 mi (953.73 km) |
| Penafiel to Onnaing | 852.38 mi (1,371.78 km) |
| Penafiel to Orange | 694.45 mi (1,117.61 km) |
| Penafiel to Orchies | 845.39 mi (1,360.53 km) |
| Penafiel to Orleans | 681.53 mi (1,096.82 km) |
| Penafiel to Orly | 735.95 mi (1,184.40 km) |
| Penafiel to Ormesson-sur-Marne | 742.85 mi (1,195.51 km) |
| Penafiel to Orsay | 726.83 mi (1,169.72 km) |
