| Southborough to Kocaali | 1,607.42 mi (2,586.89 km) |
| Southborough to Kocaeli | 1,580.32 mi (2,543.28 km) |
| Southborough to Konak | 1,570.32 mi (2,527.18 km) |
| Southborough to Konakli | 1,847.54 mi (2,973.33 km) |
| Southborough to Konya | 1,812.80 mi (2,917.41 km) |
| Southborough to Koprukoy | 2,121.81 mi (3,414.73 km) |
| Southborough to Korfez | 1,571.77 mi (2,529.51 km) |
| Southborough to Korkut | 2,168.50 mi (3,489.86 km) |
| Southborough to Kose | 2,016.72 mi (3,245.60 km) |
| Southborough to Kovancilar | 2,086.96 mi (3,358.64 km) |
| Southborough to Koyulhisar | 1,934.65 mi (3,113.52 km) |
| Southborough to Kozan | 1,969.44 mi (3,169.50 km) |
| Southborough to Kozlu | 1,630.20 mi (2,623.56 km) |
| Southborough to Kozluk | 2,178.81 mi (3,506.46 km) |
| Southborough to Kucuk Dalyan | 2,040.63 mi (3,284.07 km) |
