| Pottstown to Olivares | 3,646.43 mi (5,868.37 km) |
| Pottstown to Olivenza | 3,561.97 mi (5,732.43 km) |
| Pottstown to Olot | 3,912.15 mi (6,296.00 km) |
| Pottstown to Onate | 3,661.40 mi (5,892.46 km) |
| Pottstown to Onda | 3,852.69 mi (6,200.30 km) |
| Pottstown to Onteniente | 3,872.10 mi (6,231.54 km) |
| Pottstown to Orihuela | 3,879.21 mi (6,242.99 km) |
| Pottstown to Osuna | 3,703.75 mi (5,960.61 km) |
| Pottstown to Ourense | 3,425.05 mi (5,512.08 km) |
| Pottstown to Oviedo | 3,493.53 mi (5,622.30 km) |
| Pottstown to Paiporta | 3,862.04 mi (6,215.35 km) |
| Pottstown to Pajara | 3,536.26 mi (5,691.06 km) |
| Pottstown to Palafolls | 3,940.13 mi (6,341.02 km) |
| Pottstown to Palafrugell | 3,951.27 mi (6,358.96 km) |
| Pottstown to Palamos | 3,951.95 mi (6,360.06 km) |
