| New Philadelphia to Nuth | 4,023.96 mi (6,475.94 km) |
| New Philadelphia to Oegstgeest | 3,931.00 mi (6,326.34 km) |
| New Philadelphia to Oirschot | 3,983.46 mi (6,410.75 km) |
| New Philadelphia to Oisterwijk | 3,977.07 mi (6,400.48 km) |
| New Philadelphia to Oldebroek | 3,977.74 mi (6,401.56 km) |
| New Philadelphia to Oldenzaal | 4,020.91 mi (6,471.03 km) |
| New Philadelphia to Ommen | 3,995.27 mi (6,429.76 km) |
| New Philadelphia to Oosterend | 3,967.41 mi (6,384.94 km) |
| New Philadelphia to Oosterhout | 3,962.02 mi (6,376.26 km) |
| New Philadelphia to Oosterwolde | 3,976.24 mi (6,399.15 km) |
| New Philadelphia to Oostzaan | 3,939.59 mi (6,340.16 km) |
| New Philadelphia to Opmeer | 3,934.30 mi (6,331.64 km) |
| New Philadelphia to Oss | 3,983.73 mi (6,411.20 km) |
| New Philadelphia to Oud-Beijerland | 3,939.21 mi (6,339.55 km) |
| New Philadelphia to Oudenbosch | 3,950.74 mi (6,358.10 km) |
