| Sumner to Isny im Allgau | 5,278.27 mi (8,494.55 km) |
| Sumner to Isselburg | 4,951.38 mi (7,968.47 km) |
| Sumner to Issum | 4,967.21 mi (7,993.96 km) |
| Sumner to Itzehoe | 4,900.04 mi (7,885.86 km) |
| Sumner to Jena | 5,122.18 mi (8,243.35 km) |
| Sumner to Jever | 4,884.52 mi (7,860.88 km) |
| Sumner to Jork | 4,926.46 mi (7,928.37 km) |
| Sumner to Juchen | 4,994.21 mi (8,037.41 km) |
| Sumner to Julich | 5,001.01 mi (8,048.35 km) |
| Sumner to Juterbog | 5,090.77 mi (8,192.81 km) |
| Sumner to Kaarst | 4,990.34 mi (8,031.18 km) |
| Sumner to Kaiserslautern | 5,120.59 mi (8,240.80 km) |
| Sumner to Kalkar | 4,952.61 mi (7,970.46 km) |
| Sumner to Kall | 5,027.06 mi (8,090.27 km) |
| Sumner to Kaltenkirchen | 4,914.68 mi (7,909.41 km) |
