| Thornton to Glyka Nera | 1,632.45 mi (2,627.17 km) |
| Thornton to Grevena | 1,438.12 mi (2,314.43 km) |
| Thornton to Ialysos | 1,868.29 mi (3,006.72 km) |
| Thornton to Ilion | 1,625.08 mi (2,615.31 km) |
| Thornton to Ilioupoli | 1,632.14 mi (2,626.67 km) |
| Thornton to Ioannina | 1,440.48 mi (2,318.23 km) |
| Thornton to Irakleio | 1,820.27 mi (2,929.44 km) |
| Thornton to Irakleio | 1,626.51 mi (2,617.61 km) |
| Thornton to Kaisariani | 1,630.56 mi (2,624.13 km) |
| Thornton to Kalamaria | 1,466.40 mi (2,359.94 km) |
| Thornton to Kalamata | 1,625.07 mi (2,615.29 km) |
| Thornton to Kallithea | 1,629.51 mi (2,622.45 km) |
| Thornton to Kalymnos | 1,796.24 mi (2,890.77 km) |
| Thornton to Kalyvia Thorikou | 1,643.25 mi (2,644.56 km) |
| Thornton to Kamatero | 1,624.09 mi (2,613.72 km) |
