| Phillipsburg to Orbetello | 4,258.34 mi (6,853.13 km) |
| Phillipsburg to Oria | 4,610.48 mi (7,419.85 km) |
| Phillipsburg to Oristano | 4,230.41 mi (6,808.19 km) |
| Phillipsburg to Orta Nova | 4,495.17 mi (7,234.28 km) |
| Phillipsburg to Orte | 4,308.91 mi (6,934.52 km) |
| Phillipsburg to Ortona | 4,400.30 mi (7,081.61 km) |
| Phillipsburg to Orvieto | 4,287.69 mi (6,900.37 km) |
| Phillipsburg to Orzinuovi | 4,101.82 mi (6,601.25 km) |
| Phillipsburg to Osimo | 4,319.64 mi (6,951.79 km) |
| Phillipsburg to Ospitaletto | 4,102.64 mi (6,602.57 km) |
| Phillipsburg to Ostuni | 4,599.20 mi (7,401.70 km) |
| Phillipsburg to Ottaviano | 4,459.46 mi (7,176.80 km) |
| Phillipsburg to Ovada | 4,071.63 mi (6,552.65 km) |
| Phillipsburg to Ozieri | 4,225.20 mi (6,799.80 km) |
| Phillipsburg to Paceco | 4,481.15 mi (7,211.72 km) |
