| On Top of the World Designated Place to Cibolo (Texas) | 958.99 mi (1,543.34 km) |
| On Top of the World Designated Place to Cicero (Illinois) | 931.93 mi (1,499.79 km) |
| On Top of the World Designated Place to Cimarron Hills (Colorado) | 1,444.65 mi (2,324.93 km) |
| On Top of the World Designated Place to Cincinnati (Ohio) | 704.84 mi (1,134.33 km) |
| On Top of the World Designated Place to Cinco Ranch (Texas) | 811.61 mi (1,306.17 km) |
| On Top of the World Designated Place to Circleville (Ohio) | 726.45 mi (1,169.10 km) |
| On Top of the World Designated Place to Citrus (California) | 2,112.52 mi (3,399.77 km) |
| On Top of the World Designated Place to Citrus Heights (California) | 2,313.47 mi (3,723.17 km) |
| On Top of the World Designated Place to Citrus Park (Florida) | 73.30 mi (117.97 km) |
| On Top of the World Designated Place to Claiborne (Louisiana) | 633.76 mi (1,019.94 km) |
| On Top of the World Designated Place to Claremont (California) | 2,102.57 mi (3,383.76 km) |
| On Top of the World Designated Place to Claremont (New Hampshire) | 1,129.40 mi (1,817.59 km) |
| On Top of the World Designated Place to Claremore (Oklahoma) | 919.47 mi (1,479.75 km) |
| On Top of the World Designated Place to Clarksburg (Maryland) | 755.42 mi (1,215.73 km) |
| On Top of the World Designated Place to Clarksburg (West Virginia) | 712.23 mi (1,146.23 km) |
