| Thornton Heath to Glyka Nera | 1,485.87 mi (2,391.27 km) |
| Thornton Heath to Grevena | 1,291.69 mi (2,078.77 km) |
| Thornton Heath to Ialysos | 1,728.66 mi (2,782.01 km) |
| Thornton Heath to Ilion | 1,478.21 mi (2,378.95 km) |
| Thornton Heath to Ilioupoli | 1,485.09 mi (2,390.03 km) |
| Thornton Heath to Ioannina | 1,290.79 mi (2,077.33 km) |
| Thornton Heath to Irakleio | 1,669.59 mi (2,686.95 km) |
| Thornton Heath to Irakleio | 1,479.89 mi (2,381.65 km) |
| Thornton Heath to Kaisariani | 1,483.65 mi (2,387.71 km) |
| Thornton Heath to Kalamaria | 1,326.59 mi (2,134.94 km) |
| Thornton Heath to Kalamata | 1,470.89 mi (2,367.16 km) |
| Thornton Heath to Kallithea | 1,482.38 mi (2,385.66 km) |
| Thornton Heath to Kalymnos | 1,655.22 mi (2,663.82 km) |
| Thornton Heath to Kalyvia Thorikou | 1,496.36 mi (2,408.17 km) |
| Thornton Heath to Kamatero | 1,477.35 mi (2,377.56 km) |
