| South Portland to Vrnjacka Banja | 4,302.77 mi (6,924.63 km) |
| South Portland to Vrsac | 4,260.27 mi (6,856.25 km) |
| South Portland to Zabalj | 4,200.86 mi (6,760.63 km) |
| South Portland to Zabari | 4,286.72 mi (6,898.81 km) |
| South Portland to Zagubica | 4,316.31 mi (6,946.42 km) |
| South Portland to Zajecar | 4,348.08 mi (6,997.56 km) |
| South Portland to Zemun | 4,234.36 mi (6,814.55 km) |
| South Portland to Zitiste | 4,215.75 mi (6,784.60 km) |
| South Portland to Zitorada | 4,354.07 mi (7,007.20 km) |
| South Portland to Zrenjanin | 4,213.19 mi (6,780.47 km) |
| South Portland to Banovce nad Bebravou | 4,004.08 mi (6,443.95 km) |
| South Portland to Banska Bystrica | 4,037.91 mi (6,498.39 km) |
| South Portland to Banska Stiavnica | 4,038.36 mi (6,499.11 km) |
| South Portland to Bardejov | 4,098.94 mi (6,596.61 km) |
| South Portland to Bernolakovo | 3,985.20 mi (6,413.56 km) |
