| Portchester to Cockermouth | 280.01 mi (450.64 km) |
| Portchester to Colchester | 113.46 mi (182.60 km) |
| Portchester to Coleford | 92.05 mi (148.14 km) |
| Portchester to Colne | 212.91 mi (342.65 km) |
| Portchester to Colwyn Bay | 201.51 mi (324.30 km) |
| Portchester to Congleton | 166.94 mi (268.67 km) |
| Portchester to Conisbrough | 182.26 mi (293.31 km) |
| Portchester to Connahs Quay | 183.64 mi (295.54 km) |
| Portchester to Consett | 278.50 mi (448.21 km) |
| Portchester to Conwy | 204.00 mi (328.30 km) |
| Portchester to Cookstown | 352.59 mi (567.43 km) |
| Portchester to Corby | 115.11 mi (185.26 km) |
| Portchester to Corfe Mullen | 39.50 mi (63.57 km) |
| Portchester to Corsham | 61.68 mi (99.27 km) |
| Portchester to Coseley | 125.01 mi (201.18 km) |
