| Ada to Colchester | 966.48 mi (1,555.40 km) |
| Ada to Coleford | 1,109.37 mi (1,785.36 km) |
| Ada to Colne | 1,132.56 mi (1,822.68 km) |
| Ada to Colwyn Bay | 1,179.65 mi (1,898.46 km) |
| Ada to Congleton | 1,118.43 mi (1,799.95 km) |
| Ada to Conisbrough | 1,087.09 mi (1,749.51 km) |
| Ada to Connahs Quay | 1,152.76 mi (1,855.19 km) |
| Ada to Consett | 1,145.58 mi (1,843.63 km) |
| Ada to Conwy | 1,184.61 mi (1,906.45 km) |
| Ada to Cookstown | 1,324.81 mi (2,132.08 km) |
| Ada to Corby | 1,043.86 mi (1,679.93 km) |
| Ada to Corfe Mullen | 1,069.94 mi (1,721.90 km) |
| Ada to Corsham | 1,085.95 mi (1,747.66 km) |
| Ada to Coseley | 1,100.66 mi (1,771.34 km) |
| Ada to Cosham | 1,030.06 mi (1,657.73 km) |
