| Pottstown to Montalegre | 3,441.77 mi (5,539.00 km) |
| Pottstown to Montemor-o-Novo | 3,508.32 mi (5,646.10 km) |
| Pottstown to Montemor-o-Velho | 3,443.13 mi (5,541.19 km) |
| Pottstown to Montijo | 3,473.80 mi (5,590.54 km) |
| Pottstown to Mortagua | 3,457.68 mi (5,564.59 km) |
| Pottstown to Moura | 3,561.00 mi (5,730.88 km) |
| Pottstown to Murtosa | 3,430.26 mi (5,520.47 km) |
| Pottstown to Nazare | 3,439.99 mi (5,536.13 km) |
| Pottstown to Nelas | 3,473.92 mi (5,590.73 km) |
| Pottstown to Obidos | 3,442.22 mi (5,539.72 km) |
| Pottstown to Odemira | 3,518.75 mi (5,662.88 km) |
| Pottstown to Odivelas | 3,457.02 mi (5,563.53 km) |
| Pottstown to Oeiras | 3,453.30 mi (5,557.54 km) |
| Pottstown to Olhao | 3,574.63 mi (5,752.81 km) |
| Pottstown to Oliveira de Azemeis | 3,435.04 mi (5,528.17 km) |
