| Piqua to Coswig | 4,359.78 mi (7,016.38 km) |
| Piqua to Cottbus | 4,432.94 mi (7,134.13 km) |
| Piqua to Crailsheim | 4,370.57 mi (7,033.75 km) |
| Piqua to Cremlingen | 4,282.00 mi (6,891.21 km) |
| Piqua to Crimmitschau | 4,396.95 mi (7,076.20 km) |
| Piqua to Cuxhaven | 4,156.45 mi (6,689.16 km) |
| Piqua to Dachau | 4,455.31 mi (7,170.14 km) |
| Piqua to Dallgow-Doberitz | 4,358.40 mi (7,014.16 km) |
| Piqua to Damme | 4,182.65 mi (6,731.32 km) |
| Piqua to Darmstadt | 4,289.83 mi (6,903.82 km) |
| Piqua to Dassel | 4,262.05 mi (6,859.11 km) |
| Piqua to Datteln | 4,179.44 mi (6,726.16 km) |
| Piqua to Dautphe | 4,251.85 mi (6,842.70 km) |
| Piqua to Deggendorf | 4,492.68 mi (7,230.26 km) |
| Piqua to Delbruck | 4,221.56 mi (6,793.94 km) |
