| Piqua to Isny im Allgau | 4,421.74 mi (7,116.11 km) |
| Piqua to Isselburg | 4,140.61 mi (6,663.67 km) |
| Piqua to Issum | 4,148.54 mi (6,676.42 km) |
| Piqua to Itzehoe | 4,183.72 mi (6,733.05 km) |
| Piqua to Jena | 4,363.28 mi (7,022.02 km) |
| Piqua to Jever | 4,137.19 mi (6,658.17 km) |
| Piqua to Jork | 4,202.71 mi (6,763.61 km) |
| Piqua to Juchen | 4,165.82 mi (6,704.23 km) |
| Piqua to Julich | 4,166.20 mi (6,704.86 km) |
| Piqua to Juterbog | 4,378.91 mi (7,047.18 km) |
| Piqua to Kaarst | 4,166.41 mi (6,705.18 km) |
| Piqua to Kaiserslautern | 4,270.43 mi (6,872.59 km) |
| Piqua to Kalkar | 4,137.08 mi (6,657.99 km) |
| Piqua to Kall | 4,185.85 mi (6,736.47 km) |
| Piqua to Kaltenkirchen | 4,202.39 mi (6,763.09 km) |
