| Pottstown to Noventa Vicentina | 4,211.20 mi (6,777.28 km) |
| Pottstown to Novi di Modena | 4,197.45 mi (6,755.14 km) |
| Pottstown to Novi Ligure | 4,110.94 mi (6,615.92 km) |
| Pottstown to Nuoro | 4,285.89 mi (6,897.48 km) |
| Pottstown to Occhiobello | 4,225.51 mi (6,800.30 km) |
| Pottstown to Oderzo | 4,234.75 mi (6,815.18 km) |
| Pottstown to Oggiono | 4,101.90 mi (6,601.37 km) |
| Pottstown to Olbia | 4,272.39 mi (6,875.75 km) |
| Pottstown to Oleggio | 4,077.20 mi (6,561.62 km) |
| Pottstown to Olgiate Comasco | 4,085.56 mi (6,575.08 km) |
| Pottstown to Olgiate Olona | 4,086.83 mi (6,577.11 km) |
| Pottstown to Omegna | 4,058.64 mi (6,531.75 km) |
| Pottstown to Opera | 4,109.18 mi (6,613.08 km) |
| Pottstown to Oppeano | 4,195.79 mi (6,752.47 km) |
| Pottstown to Orbassano | 4,048.86 mi (6,516.02 km) |
