| Ampthill to Carson (California) | 5,417.78 mi (8,719.07 km) |
| Ampthill to Carson City (Nevada) | 5,158.68 mi (8,302.09 km) |
| Ampthill to Carteret (New Jersey) | 3,449.96 mi (5,552.17 km) |
| Ampthill to Cartersville (Georgia) | 4,176.81 mi (6,721.93 km) |
| Ampthill to Carthage (Missouri) | 4,400.31 mi (7,081.62 km) |
| Ampthill to Cary (Illinois) | 3,924.96 mi (6,316.61 km) |
| Ampthill to Cary (North Carolina) | 3,856.32 mi (6,206.14 km) |
| Ampthill to Casa de Oro-Mount Helix (California) | 5,437.76 mi (8,751.23 km) |
| Ampthill to Casa Grande (Arizona) | 5,255.46 mi (8,457.85 km) |
| Ampthill to Casas Adobes (Arizona) | 5,261.02 mi (8,466.79 km) |
| Ampthill to Cascades (Virginia) | 3,646.53 mi (5,868.53 km) |
| Ampthill to Casper (Wyoming) | 4,533.18 mi (7,295.45 km) |
| Ampthill to Casselberry (Florida) | 4,307.68 mi (6,932.54 km) |
| Ampthill to Castaic (California) | 5,392.67 mi (8,678.67 km) |
| Ampthill to Castle Pines (Colorado) | 4,662.26 mi (7,503.19 km) |
