| South Portland to Yverdon-les-Bains | 3,596.63 mi (5,788.22 km) |
| South Portland to Zofingen | 3,635.28 mi (5,850.42 km) |
| South Portland to Zollikon | 3,660.34 mi (5,890.75 km) |
| South Portland to Zuchwil | 3,622.07 mi (5,829.16 km) |
| South Portland to Zug | 3,663.29 mi (5,895.49 km) |
| South Portland to Zurich | 3,657.78 mi (5,886.62 km) |
| South Portland to Ra's al `Ayn | 5,371.48 mi (8,644.56 km) |
| South Portland to Tall Abyad | 5,336.04 mi (8,587.53 km) |
| South Portland to Acarlar | 4,831.92 mi (7,776.22 km) |
| South Portland to Acigol | 5,072.82 mi (8,163.91 km) |
| South Portland to Acipayam | 4,916.18 mi (7,911.82 km) |
| South Portland to Adakli | 5,268.72 mi (8,479.19 km) |
| South Portland to Adana | 5,178.37 mi (8,333.78 km) |
| South Portland to Adilcevaz | 5,373.93 mi (8,648.51 km) |
| South Portland to Adiyaman | 5,257.41 mi (8,460.99 km) |
