| Povoa de Santa Iria to Oerlinghausen | 1,242.41 mi (1,999.46 km) |
| Povoa de Santa Iria to Oestrich-Winkel | 1,135.87 mi (1,828.01 km) |
| Povoa de Santa Iria to Offenburg | 1,074.11 mi (1,728.61 km) |
| Povoa de Santa Iria to Oftersheim | 1,132.63 mi (1,822.79 km) |
| Povoa de Santa Iria to Ohrdruf | 1,267.40 mi (2,039.68 km) |
| Povoa de Santa Iria to Ohringen | 1,161.32 mi (1,868.97 km) |
| Povoa de Santa Iria to Olbernhau | 1,359.57 mi (2,188.02 km) |
| Povoa de Santa Iria to Olching | 1,202.19 mi (1,934.74 km) |
| Povoa de Santa Iria to Oldenburg | 1,282.18 mi (2,063.47 km) |
| Povoa de Santa Iria to Oldenburg in Holstein | 1,416.71 mi (2,279.98 km) |
| Povoa de Santa Iria to Olfen | 1,189.65 mi (1,914.56 km) |
| Povoa de Santa Iria to Olpe | 1,173.00 mi (1,887.76 km) |
| Povoa de Santa Iria to Olsberg | 1,209.37 mi (1,946.29 km) |
| Povoa de Santa Iria to Oranienburg | 1,429.79 mi (2,301.02 km) |
| Povoa de Santa Iria to Ortenberg | 1,188.15 mi (1,912.15 km) |
