| South Portland to Opovo | 4,227.71 mi (6,803.85 km) |
| South Portland to Osecina | 4,220.68 mi (6,792.52 km) |
| South Portland to Padinska Skela | 4,231.81 mi (6,810.44 km) |
| South Portland to Pancevo | 4,243.26 mi (6,828.87 km) |
| South Portland to Paracin | 4,314.40 mi (6,943.36 km) |
| South Portland to Pecinci | 4,214.89 mi (6,783.20 km) |
| South Portland to Petrovac na Mlavi | 4,294.14 mi (6,910.74 km) |
| South Portland to Petrovaradin | 4,197.30 mi (6,754.91 km) |
| South Portland to Pirot | 4,390.77 mi (7,066.26 km) |
| South Portland to Plandiste | 4,248.67 mi (6,837.57 km) |
| South Portland to Pozarevac | 4,275.29 mi (6,880.41 km) |
| South Portland to Pozega | 4,258.90 mi (6,854.04 km) |
| South Portland to Presevo | 4,386.84 mi (7,059.94 km) |
| South Portland to Priboj | 4,248.19 mi (6,836.79 km) |
| South Portland to Prijepolje | 4,254.92 mi (6,847.63 km) |
