| Glassboro to Olivares | 3,633.66 mi (5,847.81 km) |
| Glassboro to Olivenza | 3,550.03 mi (5,713.23 km) |
| Glassboro to Olot | 3,906.50 mi (6,286.91 km) |
| Glassboro to Onate | 3,655.01 mi (5,882.17 km) |
| Glassboro to Onda | 3,844.18 mi (6,186.60 km) |
| Glassboro to Onteniente | 3,862.47 mi (6,216.05 km) |
| Glassboro to Orihuela | 3,868.83 mi (6,226.28 km) |
| Glassboro to Osuna | 3,691.17 mi (5,940.37 km) |
| Glassboro to Ourense | 3,416.39 mi (5,498.14 km) |
| Glassboro to Oviedo | 3,486.46 mi (5,610.92 km) |
| Glassboro to Paiporta | 3,853.01 mi (6,200.82 km) |
| Glassboro to Pajara | 3,512.73 mi (5,653.19 km) |
| Glassboro to Palafolls | 3,934.11 mi (6,331.33 km) |
| Glassboro to Palafrugell | 3,945.61 mi (6,349.84 km) |
| Glassboro to Palamos | 3,946.21 mi (6,350.82 km) |
