| Grenchen to Isny im Allgau | 128.27 mi (206.43 km) |
| Grenchen to Isselburg | 323.46 mi (520.56 km) |
| Grenchen to Issum | 303.60 mi (488.60 km) |
| Grenchen to Itzehoe | 474.46 mi (763.57 km) |
| Grenchen to Jena | 320.26 mi (515.40 km) |
| Grenchen to Jever | 441.63 mi (710.74 km) |
| Grenchen to Jork | 449.68 mi (723.68 km) |
| Grenchen to Juchen | 273.19 mi (439.66 km) |
| Grenchen to Julich | 262.07 mi (421.76 km) |
| Grenchen to Juterbog | 417.76 mi (672.32 km) |
| Grenchen to Kaarst | 280.39 mi (451.24 km) |
| Grenchen to Kaiserslautern | 156.68 mi (252.15 km) |
| Grenchen to Kalkar | 318.13 mi (511.98 km) |
| Grenchen to Kall | 235.26 mi (378.61 km) |
| Grenchen to Kaltenkirchen | 472.93 mi (761.11 km) |
