| Piqua to Kamen | 4,193.68 mi (6,749.08 km) |
| Piqua to Kamenz | 4,443.03 mi (7,150.37 km) |
| Piqua to Kamp-Lintfort | 4,153.96 mi (6,685.16 km) |
| Piqua to Kandel | 4,299.77 mi (6,919.82 km) |
| Piqua to Kappeln | 4,173.86 mi (6,717.17 km) |
| Piqua to Karben | 4,281.74 mi (6,890.80 km) |
| Piqua to Karlsdorf-Neuthard | 4,311.33 mi (6,938.41 km) |
| Piqua to Karlsfeld | 4,458.20 mi (7,174.77 km) |
| Piqua to Karlsruhe | 4,310.33 mi (6,936.81 km) |
| Piqua to Kassel | 4,271.75 mi (6,874.72 km) |
| Piqua to Kaufbeuren | 4,437.76 mi (7,141.88 km) |
| Piqua to Kaufering | 4,440.45 mi (7,146.21 km) |
| Piqua to Kaufungen | 4,277.47 mi (6,883.92 km) |
| Piqua to Kehl | 4,302.76 mi (6,924.62 km) |
| Piqua to Kelheim | 4,447.57 mi (7,157.67 km) |
