| Piqua to Cromer | 3,911.68 mi (6,295.24 km) |
| Piqua to Crosby | 3,731.26 mi (6,004.88 km) |
| Piqua to Crowborough | 3,920.67 mi (6,309.71 km) |
| Piqua to Croxley Green | 3,880.25 mi (6,244.65 km) |
| Piqua to Croydon | 3,901.12 mi (6,278.24 km) |
| Piqua to Cudworth | 3,790.83 mi (6,100.76 km) |
| Piqua to Culcheth | 3,751.80 mi (6,037.94 km) |
| Piqua to Cullercoats | 3,753.33 mi (6,040.41 km) |
| Piqua to Cumbernauld | 3,637.67 mi (5,854.26 km) |
| Piqua to Cumnock | 3,638.62 mi (5,855.79 km) |
| Piqua to Cupar | 3,665.16 mi (5,898.51 km) |
| Piqua to Cwmbran | 3,778.45 mi (6,080.82 km) |
| Piqua to Dagenham | 3,906.28 mi (6,286.56 km) |
| Piqua to Dalkeith | 3,673.03 mi (5,911.17 km) |
| Piqua to Darfield | 3,793.16 mi (6,104.50 km) |
