| Gainsborough to Cockermouth | 136.41 mi (219.53 km) |
| Gainsborough to Colchester | 125.77 mi (202.41 km) |
| Gainsborough to Coleford | 135.51 mi (218.09 km) |
| Gainsborough to Colne | 65.46 mi (105.34 km) |
| Gainsborough to Colwyn Bay | 120.96 mi (194.67 km) |
| Gainsborough to Congleton | 61.90 mi (99.61 km) |
| Gainsborough to Conisbrough | 19.43 mi (31.27 km) |
| Gainsborough to Connahs Quay | 95.13 mi (153.09 km) |
| Gainsborough to Consett | 108.84 mi (175.15 km) |
| Gainsborough to Conwy | 126.37 mi (203.37 km) |
| Gainsborough to Cookstown | 257.11 mi (413.78 km) |
| Gainsborough to Corby | 63.22 mi (101.74 km) |
| Gainsborough to Corfe Mullen | 189.33 mi (304.70 km) |
| Gainsborough to Corsham | 148.39 mi (238.81 km) |
| Gainsborough to Coseley | 80.20 mi (129.06 km) |
