| Hartford to Isny im Allgau | 3,883.53 mi (6,249.93 km) |
| Hartford to Isselburg | 3,618.96 mi (5,824.15 km) |
| Hartford to Issum | 3,625.01 mi (5,833.90 km) |
| Hartford to Itzehoe | 3,680.95 mi (5,923.92 km) |
| Hartford to Jena | 3,845.94 mi (6,189.45 km) |
| Hartford to Jever | 3,629.15 mi (5,840.55 km) |
| Hartford to Jork | 3,697.70 mi (5,950.88 km) |
| Hartford to Juchen | 3,639.81 mi (5,857.70 km) |
| Hartford to Julich | 3,638.88 mi (5,856.20 km) |
| Hartford to Juterbog | 3,870.98 mi (6,229.74 km) |
| Hartford to Kaarst | 3,641.29 mi (5,860.09 km) |
| Hartford to Kaiserslautern | 3,737.23 mi (6,014.48 km) |
| Hartford to Kalkar | 3,614.55 mi (5,817.05 km) |
| Hartford to Kall | 3,656.68 mi (5,884.86 km) |
| Hartford to Kaltenkirchen | 3,699.90 mi (5,954.41 km) |
