| South Portland to Yuncos | 3,334.16 mi (5,365.82 km) |
| South Portland to Zafra | 3,266.33 mi (5,256.66 km) |
| South Portland to Zamora | 3,202.09 mi (5,153.27 km) |
| South Portland to Zaragoza | 3,423.49 mi (5,509.57 km) |
| South Portland to Zarautz | 3,314.99 mi (5,334.95 km) |
| South Portland to Zuera | 3,420.98 mi (5,505.54 km) |
| South Portland to Zumaia | 3,310.47 mi (5,327.69 km) |
| South Portland to Zumarraga | 3,314.08 mi (5,333.49 km) |
| South Portland to Longyearbyen | 3,225.78 mi (5,191.39 km) |
| South Portland to Ahus | 3,621.98 mi (5,829.01 km) |
| South Portland to Akersberga | 3,653.69 mi (5,880.05 km) |
| South Portland to Alingsas | 3,506.35 mi (5,642.93 km) |
| South Portland to Almhult | 3,598.70 mi (5,791.55 km) |
| South Portland to Alta | 3,656.75 mi (5,884.97 km) |
| South Portland to Amal | 3,483.47 mi (5,606.10 km) |
