| Piqua to Cockermouth | 3,690.43 mi (5,939.18 km) |
| Piqua to Colchester | 3,925.92 mi (6,318.15 km) |
| Piqua to Coleford | 3,790.86 mi (6,100.80 km) |
| Piqua to Colne | 3,754.87 mi (6,042.87 km) |
| Piqua to Colwyn Bay | 3,710.47 mi (5,971.42 km) |
| Piqua to Congleton | 3,770.85 mi (6,068.60 km) |
| Piqua to Conisbrough | 3,800.57 mi (6,116.42 km) |
| Piqua to Connahs Quay | 3,737.07 mi (6,014.24 km) |
| Piqua to Consett | 3,743.13 mi (6,023.99 km) |
| Piqua to Conwy | 3,705.69 mi (5,963.73 km) |
| Piqua to Cookstown | 3,562.78 mi (5,733.74 km) |
| Piqua to Corby | 3,847.12 mi (6,191.35 km) |
| Piqua to Corfe Mullen | 3,842.13 mi (6,183.31 km) |
| Piqua to Corsham | 3,817.42 mi (6,143.55 km) |
| Piqua to Coseley | 3,791.86 mi (6,102.41 km) |
