| South Portland to Saulkrasti | 3,921.48 mi (6,311.02 km) |
| South Portland to Sigulda | 3,939.50 mi (6,340.01 km) |
| South Portland to Smiltene | 3,962.47 mi (6,376.99 km) |
| South Portland to Talsi | 3,862.31 mi (6,215.79 km) |
| South Portland to Tukums | 3,890.15 mi (6,260.60 km) |
| South Portland to Ulbroka | 3,928.25 mi (6,321.91 km) |
| South Portland to Valka | 3,953.70 mi (6,362.87 km) |
| South Portland to Valmiera | 3,942.41 mi (6,344.70 km) |
| South Portland to Varaklani | 4,019.98 mi (6,469.53 km) |
| South Portland to Ventspils | 3,824.32 mi (6,154.64 km) |
| South Portland to Balzers | 3,707.51 mi (5,966.66 km) |
| South Portland to Eschen | 3,703.37 mi (5,960.00 km) |
| South Portland to Gamprin | 3,702.68 mi (5,958.88 km) |
| South Portland to Mauren | 3,704.06 mi (5,961.11 km) |
| South Portland to Planken | 3,705.13 mi (5,962.84 km) |
