| Thornton to Isny im Allgau | 667.68 mi (1,074.53 km) |
| Thornton to Isselburg | 372.45 mi (599.40 km) |
| Thornton to Issum | 379.70 mi (611.06 km) |
| Thornton to Itzehoe | 462.81 mi (744.81 km) |
| Thornton to Jena | 599.38 mi (964.60 km) |
| Thornton to Jever | 399.00 mi (642.12 km) |
| Thornton to Jork | 471.95 mi (759.52 km) |
| Thornton to Juchen | 397.43 mi (639.61 km) |
| Thornton to Julich | 398.71 mi (641.66 km) |
| Thornton to Juterbog | 633.09 mi (1,018.86 km) |
| Thornton to Kaarst | 397.68 mi (640.00 km) |
| Thornton to Kaiserslautern | 509.62 mi (820.16 km) |
| Thornton to Kalkar | 368.48 mi (593.01 km) |
| Thornton to Kall | 420.10 mi (676.09 km) |
| Thornton to Kaltenkirchen | 481.24 mi (774.49 km) |
