| Boulder City to Cockermouth | 4,990.12 mi (8,030.82 km) |
| Boulder City to Colchester | 5,247.68 mi (8,445.33 km) |
| Boulder City to Coleford | 5,137.14 mi (8,267.42 km) |
| Boulder City to Colne | 5,062.17 mi (8,146.78 km) |
| Boulder City to Colwyn Bay | 5,037.20 mi (8,106.59 km) |
| Boulder City to Congleton | 5,090.83 mi (8,192.90 km) |
| Boulder City to Conisbrough | 5,108.71 mi (8,221.67 km) |
| Boulder City to Connahs Quay | 5,061.21 mi (8,145.23 km) |
| Boulder City to Consett | 5,030.08 mi (8,095.13 km) |
| Boulder City to Conwy | 5,033.38 mi (8,100.44 km) |
| Boulder City to Cookstown | 4,881.97 mi (7,856.77 km) |
| Boulder City to Corby | 5,169.30 mi (8,319.18 km) |
| Boulder City to Corfe Mullen | 5,201.74 mi (8,371.39 km) |
| Boulder City to Corsham | 5,167.04 mi (8,315.55 km) |
| Boulder City to Coseley | 5,121.75 mi (8,242.66 km) |
