| Didcot to Chantilly (Virginia) | 3,634.64 mi (5,849.38 km) |
| Didcot to Chaparral (New Mexico) | 5,102.66 mi (8,211.93 km) |
| Didcot to Chapel Hill (North Carolina) | 3,835.81 mi (6,173.15 km) |
| Didcot to Charleston (Illinois) | 4,035.09 mi (6,493.85 km) |
| Didcot to Charleston (South Carolina) | 4,022.01 mi (6,472.80 km) |
| Didcot to Charleston (West Virginia) | 3,829.04 mi (6,162.25 km) |
| Didcot to Charlotte (North Carolina) | 3,943.34 mi (6,346.20 km) |
| Didcot to Charlottesville (Virginia) | 3,715.60 mi (5,979.68 km) |
| Didcot to Chaska (Minnesota) | 3,987.31 mi (6,416.96 km) |
| Didcot to Chatham (Illinois) | 4,084.67 mi (6,573.64 km) |
| Didcot to Chattanooga (Tennessee) | 4,130.23 mi (6,646.97 km) |
| Didcot to Cheat Lake (West Virginia) | 3,697.29 mi (5,950.21 km) |
| Didcot to Chelsea (Alabama) | 4,271.01 mi (6,873.53 km) |
| Didcot to Chelsea (Massachusetts) | 3,220.84 mi (5,183.44 km) |
| Didcot to Cheney (Washington) | 4,625.66 mi (7,444.29 km) |
