| Didcot to Corinth (Mississippi) | 4,267.17 mi (6,867.34 km) |
| Didcot to Corinth (Texas) | 4,693.62 mi (7,553.66 km) |
| Didcot to Cornelius (North Carolina) | 3,932.94 mi (6,329.45 km) |
| Didcot to Cornelius (Oregon) | 4,887.81 mi (7,866.18 km) |
| Didcot to Corning (New York) | 3,475.38 mi (5,593.09 km) |
| Didcot to Corona (California) | 5,388.90 mi (8,672.59 km) |
| Didcot to Coronado (California) | 5,443.57 mi (8,760.58 km) |
| Didcot to Corpus Christi (Texas) | 4,987.81 mi (8,027.10 km) |
| Didcot to Corsicana (Texas) | 4,724.99 mi (7,604.13 km) |
| Didcot to Cortland (New York) | 3,420.81 mi (5,505.26 km) |
| Didcot to Corvallis (Oregon) | 4,948.44 mi (7,963.75 km) |
| Didcot to Coshocton (Ohio) | 3,750.13 mi (6,035.25 km) |
| Didcot to Costa Mesa (California) | 5,411.35 mi (8,708.73 km) |
| Didcot to Coto de Caza (California) | 5,404.68 mi (8,698.00 km) |
| Didcot to Cottage Grove (Minnesota) | 3,962.74 mi (6,377.42 km) |
