| South Portland to Kihei (Hawaii) | 5,053.58 mi (8,132.96 km) |
| South Portland to Kilgore (Texas) | 1,537.71 mi (2,474.70 km) |
| South Portland to Killeen (Texas) | 1,727.04 mi (2,779.41 km) |
| South Portland to King City (California) | 2,699.22 mi (4,343.98 km) |
| South Portland to King of Prussia (Pennsylvania) | 358.08 mi (576.27 km) |
| South Portland to Kingman (Arizona) | 2,375.71 mi (3,823.33 km) |
| South Portland to Kings Mountain (North Carolina) | 826.20 mi (1,329.64 km) |
| South Portland to Kings Park (New York) | 242.44 mi (390.18 km) |
| South Portland to Kings Park West (Virginia) | 492.92 mi (793.28 km) |
| South Portland to Kingsburg (California) | 2,611.52 mi (4,202.83 km) |
| South Portland to Kingsland (Georgia) | 1,083.59 mi (1,743.86 km) |
| South Portland to Kingsport (Tennessee) | 811.62 mi (1,306.18 km) |
| South Portland to Kingston (New York) | 221.70 mi (356.79 km) |
| South Portland to Kingston (Pennsylvania) | 328.80 mi (529.15 km) |
| South Portland to Kingstowne (Virginia) | 489.74 mi (788.16 km) |
