| Glassboro to Nuth | 3,808.85 mi (6,129.76 km) |
| Glassboro to Oegstgeest | 3,720.38 mi (5,987.37 km) |
| Glassboro to Oirschot | 3,770.46 mi (6,067.96 km) |
| Glassboro to Oisterwijk | 3,764.36 mi (6,058.15 km) |
| Glassboro to Oldebroek | 3,770.43 mi (6,067.93 km) |
| Glassboro to Oldenzaal | 3,814.35 mi (6,138.61 km) |
| Glassboro to Ommen | 3,789.02 mi (6,097.83 km) |
| Glassboro to Oosterend | 3,763.21 mi (6,056.31 km) |
| Glassboro to Oosterhout | 3,749.14 mi (6,033.66 km) |
| Glassboro to Oosterwolde | 3,772.28 mi (6,070.90 km) |
| Glassboro to Oostzaan | 3,730.82 mi (6,004.18 km) |
| Glassboro to Opmeer | 3,727.01 mi (5,998.05 km) |
| Glassboro to Oss | 3,772.39 mi (6,071.08 km) |
| Glassboro to Oud-Beijerland | 3,726.60 mi (5,997.38 km) |
| Glassboro to Oudenbosch | 3,737.13 mi (6,014.33 km) |
