| Rickmansworth to Castle Rock (Colorado) | 4,682.81 mi (7,536.26 km) |
| Rickmansworth to Castro Valley (California) | 5,330.75 mi (8,579.02 km) |
| Rickmansworth to Catalina Foothills (Arizona) | 5,275.06 mi (8,489.39 km) |
| Rickmansworth to Cataño (Puerto Rico) | 4,188.97 mi (6,741.50 km) |
| Rickmansworth to Cathedral City (California) | 5,378.25 mi (8,655.45 km) |
| Rickmansworth to Catonsville (Maryland) | 3,619.93 mi (5,825.71 km) |
| Rickmansworth to Cave Spring (Virginia) | 3,845.96 mi (6,189.48 km) |
| Rickmansworth to Cayce (South Carolina) | 4,043.60 mi (6,507.54 km) |
| Rickmansworth to Cayey (Puerto Rico) | 4,206.75 mi (6,770.11 km) |
| Rickmansworth to Cedar City (Utah) | 5,052.23 mi (8,130.78 km) |
| Rickmansworth to Cedar Falls (Iowa) | 4,080.99 mi (6,567.72 km) |
| Rickmansworth to Cedar Hill (Texas) | 4,747.37 mi (7,640.15 km) |
| Rickmansworth to Cedar Lake (Indiana) | 3,946.88 mi (6,351.90 km) |
| Rickmansworth to Cedar Mill (Oregon) | 4,899.27 mi (7,884.61 km) |
| Rickmansworth to Cedar Park (Texas) | 4,888.52 mi (7,867.31 km) |
