| Thornton Heath to Islahiye | 2,043.25 mi (3,288.29 km) |
| Thornton Heath to Isparta | 1,759.47 mi (2,831.59 km) |
| Thornton Heath to Istanbul | 1,549.86 mi (2,494.25 km) |
| Thornton Heath to Izmir | 1,592.18 mi (2,562.36 km) |
| Thornton Heath to Kadinhani | 1,805.19 mi (2,905.17 km) |
| Thornton Heath to Kadirli | 2,005.41 mi (3,227.40 km) |
| Thornton Heath to Kagithane | 1,547.88 mi (2,491.08 km) |
| Thornton Heath to Kahramanmaras | 2,030.72 mi (3,268.13 km) |
| Thornton Heath to Kahta | 2,093.11 mi (3,368.54 km) |
| Thornton Heath to Kaman | 1,818.73 mi (2,926.97 km) |
| Thornton Heath to Kangal | 1,978.33 mi (3,183.81 km) |
| Thornton Heath to Kapakli | 1,495.59 mi (2,406.92 km) |
| Thornton Heath to Karaagac | 2,043.28 mi (3,288.34 km) |
| Thornton Heath to Karaagac | 1,496.29 mi (2,408.05 km) |
| Thornton Heath to Karabuk | 1,695.88 mi (2,729.25 km) |
