| Allentown to Noventa Vicentina | 4,189.90 mi (6,742.99 km) |
| Allentown to Novi di Modena | 4,176.30 mi (6,721.11 km) |
| Allentown to Novi Ligure | 4,090.03 mi (6,582.27 km) |
| Allentown to Nuoro | 4,266.11 mi (6,865.64 km) |
| Allentown to Occhiobello | 4,204.29 mi (6,766.15 km) |
| Allentown to Oderzo | 4,213.24 mi (6,780.55 km) |
| Allentown to Oggiono | 4,080.68 mi (6,567.22 km) |
| Allentown to Olbia | 4,252.43 mi (6,843.62 km) |
| Allentown to Oleggio | 4,056.09 mi (6,527.65 km) |
| Allentown to Olgiate Comasco | 4,064.38 mi (6,540.98 km) |
| Allentown to Olgiate Olona | 4,065.69 mi (6,543.09 km) |
| Allentown to Omegna | 4,037.48 mi (6,497.70 km) |
| Allentown to Opera | 4,088.07 mi (6,579.11 km) |
| Allentown to Oppeano | 4,174.52 mi (6,718.23 km) |
| Allentown to Orbassano | 4,028.02 mi (6,482.47 km) |
