| Piqua to Chenove | 4,233.82 mi (6,813.67 km) |
| Piqua to Cherbourg | 3,890.81 mi (6,261.65 km) |
| Piqua to Chevigny-Saint-Sauveur | 4,238.70 mi (6,821.53 km) |
| Piqua to Chevilly-Larue | 4,077.56 mi (6,562.20 km) |
| Piqua to Chilly-Mazarin | 4,077.92 mi (6,562.78 km) |
| Piqua to Choisy-le-Roi | 4,079.93 mi (6,566.01 km) |
| Piqua to Cholet | 3,996.79 mi (6,432.21 km) |
| Piqua to Clamart | 4,072.79 mi (6,554.53 km) |
| Piqua to Claye-Souilly | 4,085.41 mi (6,574.83 km) |
| Piqua to Clermont | 4,060.75 mi (6,535.15 km) |
| Piqua to Clermont-Ferrand | 4,204.80 mi (6,766.97 km) |
| Piqua to Clermont-l'Herault | 4,293.43 mi (6,909.60 km) |
| Piqua to Clichy | 4,071.32 mi (6,552.16 km) |
| Piqua to Clichy-sous-Bois | 4,081.12 mi (6,567.93 km) |
| Piqua to Cluses | 4,340.90 mi (6,986.00 km) |
