| On Top of the World Designated Place to Cloverleaf (Texas) | 776.33 mi (1,249.38 km) |
| On Top of the World Designated Place to Cloverly (Maryland) | 753.90 mi (1,213.28 km) |
| On Top of the World Designated Place to Clovis (California) | 2,217.47 mi (3,568.67 km) |
| On Top of the World Designated Place to Clovis (New Mexico) | 1,279.32 mi (2,058.87 km) |
| On Top of the World Designated Place to Clute (Texas) | 791.40 mi (1,273.64 km) |
| On Top of the World Designated Place to Coachella (California) | 2,012.58 mi (3,238.93 km) |
| On Top of the World Designated Place to Coalinga (California) | 2,251.30 mi (3,623.11 km) |
| On Top of the World Designated Place to Coamo (Puerto Rico) | 1,261.43 mi (2,030.08 km) |
| On Top of the World Designated Place to Coatesville (Pennsylvania) | 836.31 mi (1,345.91 km) |
| On Top of the World Designated Place to Cockeysville (Maryland) | 785.75 mi (1,264.53 km) |
| On Top of the World Designated Place to Cocoa (Florida) | 104.74 mi (168.56 km) |
| On Top of the World Designated Place to Cocoa Beach (Florida) | 113.84 mi (183.21 km) |
| On Top of the World Designated Place to Coconut Creek (Florida) | 233.77 mi (376.22 km) |
| On Top of the World Designated Place to Coeur d'Alene (Idaho) | 2,238.63 mi (3,602.72 km) |
| On Top of the World Designated Place to Cohoes (New York) | 1,057.87 mi (1,702.48 km) |
