| Didcot to Cookeville (Tennessee) | 4,088.71 mi (6,580.15 km) |
| Didcot to Coolidge (Arizona) | 5,236.78 mi (8,427.78 km) |
| Didcot to Coon Rapids (Minnesota) | 3,959.73 mi (6,372.58 km) |
| Didcot to Cooper City (Florida) | 4,369.77 mi (7,032.47 km) |
| Didcot to Coos Bay (Oregon) | 5,043.28 mi (8,116.38 km) |
| Didcot to Copiague (New York) | 3,390.25 mi (5,456.09 km) |
| Didcot to Coppell (Texas) | 4,699.86 mi (7,563.70 km) |
| Didcot to Copperas Cove (Texas) | 4,831.23 mi (7,775.11 km) |
| Didcot to Coral Gables (Florida) | 4,386.46 mi (7,059.33 km) |
| Didcot to Coral Springs (Florida) | 4,357.33 mi (7,012.45 km) |
| Didcot to Coral Terrace (Florida) | 4,385.72 mi (7,058.13 km) |
| Didcot to Coralville (Iowa) | 4,060.54 mi (6,534.81 km) |
| Didcot to Coram (New York) | 3,365.38 mi (5,416.05 km) |
| Didcot to Corcoran (California) | 5,326.07 mi (8,571.48 km) |
| Didcot to Cordele (Georgia) | 4,221.33 mi (6,793.57 km) |
