| South Portland to Veliki Preslav | 4,560.13 mi (7,338.83 km) |
| South Portland to Veliko Tarnovo | 4,516.14 mi (7,268.02 km) |
| South Portland to Velingrad | 4,495.35 mi (7,234.57 km) |
| South Portland to Vidin | 4,367.68 mi (7,029.10 km) |
| South Portland to Vratsa | 4,427.94 mi (7,126.09 km) |
| South Portland to Yambol | 4,576.72 mi (7,365.52 km) |
| South Portland to Zlatograd | 4,567.02 mi (7,349.90 km) |
| South Portland to Beli Manastir | 4,126.45 mi (6,640.89 km) |
| South Portland to Bjelovar | 4,049.85 mi (6,517.60 km) |
| South Portland to Cakovec | 4,015.85 mi (6,462.88 km) |
| South Portland to Cepin | 4,134.55 mi (6,653.91 km) |
| South Portland to Crikvenica | 3,988.21 mi (6,418.40 km) |
| South Portland to Dakovo | 4,136.00 mi (6,656.26 km) |
| South Portland to Daruvar | 4,077.10 mi (6,561.45 km) |
| South Portland to Duga Resa | 4,011.59 mi (6,456.02 km) |
