| New Philadelphia to Orbetello | 4,536.66 mi (7,301.05 km) |
| New Philadelphia to Oria | 4,885.13 mi (7,861.86 km) |
| New Philadelphia to Oristano | 4,519.07 mi (7,272.74 km) |
| New Philadelphia to Orta Nova | 4,770.37 mi (7,677.17 km) |
| New Philadelphia to Orte | 4,585.58 mi (7,379.78 km) |
| New Philadelphia to Ortona | 4,674.49 mi (7,522.87 km) |
| New Philadelphia to Orvieto | 4,563.99 mi (7,345.03 km) |
| New Philadelphia to Orzinuovi | 4,372.84 mi (7,037.41 km) |
| New Philadelphia to Osimo | 4,591.79 mi (7,389.77 km) |
| New Philadelphia to Ospitaletto | 4,372.98 mi (7,037.63 km) |
| New Philadelphia to Ostuni | 4,873.29 mi (7,842.80 km) |
| New Philadelphia to Ottaviano | 4,737.76 mi (7,624.69 km) |
| New Philadelphia to Ovada | 4,346.70 mi (6,995.34 km) |
| New Philadelphia to Ozieri | 4,511.55 mi (7,260.63 km) |
| New Philadelphia to Paceco | 4,769.58 mi (7,675.90 km) |
