| New Philadelphia to Oerlinghausen | 4,097.34 mi (6,594.03 km) |
| New Philadelphia to Oestrich-Winkel | 4,135.80 mi (6,655.93 km) |
| New Philadelphia to Offenburg | 4,184.19 mi (6,733.81 km) |
| New Philadelphia to Oftersheim | 4,179.64 mi (6,726.48 km) |
| New Philadelphia to Ohrdruf | 4,213.25 mi (6,780.57 km) |
| New Philadelphia to Ohringen | 4,221.37 mi (6,793.63 km) |
| New Philadelphia to Olbernhau | 4,316.89 mi (6,947.37 km) |
| New Philadelphia to Olching | 4,327.79 mi (6,964.91 km) |
| New Philadelphia to Oldenburg | 4,043.07 mi (6,506.70 km) |
| New Philadelphia to Oldenburg in Holstein | 4,103.12 mi (6,603.34 km) |
| New Philadelphia to Olfen | 4,056.71 mi (6,528.64 km) |
| New Philadelphia to Olpe | 4,096.24 mi (6,592.26 km) |
| New Philadelphia to Olsberg | 4,110.34 mi (6,614.95 km) |
| New Philadelphia to Oranienburg | 4,239.54 mi (6,822.88 km) |
| New Philadelphia to Ortenberg | 4,165.00 mi (6,702.92 km) |
