| Porvoo to Colchester | 1,109.55 mi (1,785.65 km) |
| Porvoo to Coleford | 1,227.97 mi (1,976.23 km) |
| Porvoo to Colne | 1,126.73 mi (1,813.30 km) |
| Porvoo to Colwyn Bay | 1,200.35 mi (1,931.78 km) |
| Porvoo to Congleton | 1,156.07 mi (1,860.52 km) |
| Porvoo to Conisbrough | 1,110.19 mi (1,786.67 km) |
| Porvoo to Connahs Quay | 1,181.76 mi (1,901.87 km) |
| Porvoo to Consett | 1,077.32 mi (1,733.77 km) |
| Porvoo to Conwy | 1,205.11 mi (1,939.44 km) |
| Porvoo to Cookstown | 1,251.42 mi (2,013.97 km) |
| Porvoo to Corby | 1,134.70 mi (1,826.13 km) |
| Porvoo to Corfe Mullen | 1,255.05 mi (2,019.81 km) |
| Porvoo to Corsham | 1,229.90 mi (1,979.33 km) |
| Porvoo to Coseley | 1,177.36 mi (1,894.77 km) |
| Porvoo to Cosham | 1,221.16 mi (1,965.27 km) |
