| Allentown to Nasaud | 4,633.72 mi (7,457.24 km) |
| Allentown to Navodari | 4,918.85 mi (7,916.13 km) |
| Allentown to Negresti-Oas | 4,572.94 mi (7,359.44 km) |
| Allentown to Nehoiu | 4,785.88 mi (7,702.13 km) |
| Allentown to Ocna Mures | 4,648.73 mi (7,481.40 km) |
| Allentown to Odobesti | 4,797.71 mi (7,721.16 km) |
| Allentown to Odorheiu Secuiesc | 4,707.38 mi (7,575.80 km) |
| Allentown to Oltenita | 4,852.21 mi (7,808.88 km) |
| Allentown to Onesti | 4,765.69 mi (7,669.63 km) |
| Allentown to Oradea | 4,546.48 mi (7,316.86 km) |
| Allentown to Orastie | 4,644.74 mi (7,474.98 km) |
| Allentown to Oravita | 4,617.03 mi (7,430.39 km) |
| Allentown to Orsova | 4,658.01 mi (7,496.34 km) |
| Allentown to Otelu Rosu | 4,624.61 mi (7,442.60 km) |
| Allentown to Otopeni | 4,810.47 mi (7,741.70 km) |
