| Castelli Calepio to Cicero (Illinois) | 4,556.95 mi (7,333.71 km) |
| Castelli Calepio to Cimarron Hills (Colorado) | 5,332.70 mi (8,582.16 km) |
| Castelli Calepio to Cincinnati (Ohio) | 4,547.77 mi (7,318.93 km) |
| Castelli Calepio to Cinco Ranch (Texas) | 5,458.70 mi (8,784.93 km) |
| Castelli Calepio to Circleville (Ohio) | 4,462.66 mi (7,181.95 km) |
| Castelli Calepio to Citrus (California) | 6,035.34 mi (9,712.95 km) |
| Castelli Calepio to Citrus Heights (California) | 5,871.46 mi (9,449.20 km) |
| Castelli Calepio to Citrus Park (Florida) | 4,971.01 mi (8,000.07 km) |
| Castelli Calepio to Claiborne (Louisiana) | 5,173.25 mi (8,325.53 km) |
| Castelli Calepio to Claremont (California) | 6,029.27 mi (9,703.17 km) |
| Castelli Calepio to Claremont (New Hampshire) | 3,867.06 mi (6,223.44 km) |
| Castelli Calepio to Claremore (Oklahoma) | 5,124.99 mi (8,247.87 km) |
| Castelli Calepio to Clarksburg (Maryland) | 4,241.63 mi (6,826.25 km) |
| Castelli Calepio to Clarksburg (West Virginia) | 4,368.15 mi (7,029.86 km) |
| Castelli Calepio to Clarksdale (Mississippi) | 5,026.06 mi (8,088.67 km) |
