| Didcot to Centralia (Illinois) | 4,117.67 mi (6,626.75 km) |
| Didcot to Centralia (Washington) | 4,816.80 mi (7,751.88 km) |
| Didcot to Centreville (Virginia) | 3,636.53 mi (5,852.42 km) |
| Didcot to Ceres (California) | 5,282.63 mi (8,501.57 km) |
| Didcot to Cerritos (California) | 5,404.95 mi (8,698.42 km) |
| Didcot to Chalco (Nebraska) | 4,253.62 mi (6,845.55 km) |
| Didcot to Chalmette (Louisiana) | 4,575.52 mi (7,363.59 km) |
| Didcot to Chambersburg (Pennsylvania) | 3,596.48 mi (5,787.98 km) |
| Didcot to Chamblee (Georgia) | 4,148.98 mi (6,677.14 km) |
| Didcot to Champaign (Illinois) | 4,009.03 mi (6,451.91 km) |
| Didcot to Champlin (Minnesota) | 3,962.89 mi (6,377.65 km) |
| Didcot to Chandler (Arizona) | 5,228.98 mi (8,415.22 km) |
| Didcot to Chanhassen (Minnesota) | 3,983.83 mi (6,411.35 km) |
| Didcot to Channahon (Illinois) | 3,947.25 mi (6,352.49 km) |
| Didcot to Channelview (Texas) | 4,790.19 mi (7,709.07 km) |
