| Upminster to Kavak | 1,832.11 mi (2,948.50 km) |
| Upminster to Kayapinar | 2,139.23 mi (3,442.76 km) |
| Upminster to Kayseri | 1,907.49 mi (3,069.80 km) |
| Upminster to Kemalpasa | 1,592.85 mi (2,563.44 km) |
| Upminster to Kemer | 1,804.09 mi (2,903.39 km) |
| Upminster to Keskin | 1,788.15 mi (2,877.75 km) |
| Upminster to Kilimli | 1,638.13 mi (2,636.31 km) |
| Upminster to Kilis | 2,065.13 mi (3,323.50 km) |
| Upminster to Kinik | 1,559.92 mi (2,510.45 km) |
| Upminster to Kirikkale | 1,776.77 mi (2,859.44 km) |
| Upminster to Kirkagac | 1,571.09 mi (2,528.42 km) |
| Upminster to Kirklareli | 1,436.64 mi (2,312.05 km) |
| Upminster to Kirsehir | 1,833.74 mi (2,951.13 km) |
| Upminster to Kizilpinar | 1,486.77 mi (2,392.73 km) |
| Upminster to Kiziltepe | 2,188.78 mi (3,522.51 km) |
