| Pottstown to Nyon | 3,949.97 mi (6,356.86 km) |
| Pottstown to Oberriet | 4,061.99 mi (6,537.14 km) |
| Pottstown to Obersiggenthal | 4,003.49 mi (6,442.99 km) |
| Pottstown to Oberwil | 3,971.79 mi (6,391.98 km) |
| Pottstown to Oberwingert | 4,022.47 mi (6,473.54 km) |
| Pottstown to Oftringen | 3,992.98 mi (6,426.09 km) |
| Pottstown to Olten | 3,991.26 mi (6,423.32 km) |
| Pottstown to Onex | 3,950.30 mi (6,357.39 km) |
| Pottstown to Opfikon | 4,016.62 mi (6,464.13 km) |
| Pottstown to Ostermundigen | 3,986.05 mi (6,414.94 km) |
| Pottstown to Payerne | 3,966.70 mi (6,383.79 km) |
| Pottstown to Pfaffikon | 4,027.74 mi (6,482.02 km) |
| Pottstown to Plan-les-Ouates | 3,951.52 mi (6,359.36 km) |
| Pottstown to Pratteln | 3,977.79 mi (6,401.64 km) |
| Pottstown to Prilly | 3,961.11 mi (6,374.80 km) |
