| Pirkkala to Oria | 1,470.64 mi (2,366.76 km) |
| Pirkkala to Oristano | 1,619.87 mi (2,606.92 km) |
| Pirkkala to Orta Nova | 1,430.26 mi (2,301.78 km) |
| Pirkkala to Orte | 1,393.38 mi (2,242.42 km) |
| Pirkkala to Ortona | 1,375.25 mi (2,213.25 km) |
| Pirkkala to Orvieto | 1,380.10 mi (2,221.05 km) |
| Pirkkala to Orzinuovi | 1,239.60 mi (1,994.94 km) |
| Pirkkala to Osimo | 1,310.52 mi (2,109.07 km) |
| Pirkkala to Ospitaletto | 1,227.12 mi (1,974.87 km) |
| Pirkkala to Ostuni | 1,455.04 mi (2,341.66 km) |
| Pirkkala to Ottaviano | 1,475.55 mi (2,374.66 km) |
| Pirkkala to Ovada | 1,311.86 mi (2,111.23 km) |
| Pirkkala to Ozieri | 1,568.51 mi (2,524.27 km) |
| Pirkkala to Paceco | 1,691.15 mi (2,721.65 km) |
| Pirkkala to Pachino | 1,749.86 mi (2,816.13 km) |
