| Twickenham to Caguas (Puerto Rico) | 4,199.13 mi (6,757.84 km) |
| Twickenham to Cahokia (Illinois) | 4,196.27 mi (6,753.24 km) |
| Twickenham to Calabasas (California) | 5,445.20 mi (8,763.21 km) |
| Twickenham to Caldwell (Idaho) | 4,845.90 mi (7,798.71 km) |
| Twickenham to Caledonia (Wisconsin) | 3,908.32 mi (6,289.83 km) |
| Twickenham to Calera (Alabama) | 4,325.81 mi (6,961.72 km) |
| Twickenham to Calexico (California) | 5,423.92 mi (8,728.96 km) |
| Twickenham to Calhoun (Georgia) | 4,185.78 mi (6,736.36 km) |
| Twickenham to California (Maryland) | 3,662.60 mi (5,894.38 km) |
| Twickenham to California City (California) | 5,361.44 mi (8,628.41 km) |
| Twickenham to Callaway (Florida) | 4,425.65 mi (7,122.40 km) |
| Twickenham to Calumet City (Illinois) | 3,950.70 mi (6,358.03 km) |
| Twickenham to Calverton (Maryland) | 3,646.99 mi (5,869.26 km) |
| Twickenham to Camano (Washington) | 4,752.55 mi (7,648.49 km) |
| Twickenham to Camarillo (California) | 5,451.89 mi (8,773.97 km) |
