| Napa to Cibolo (Texas) | 1,501.25 mi (2,416.03 km) |
| Napa to Cicero (Illinois) | 1,830.22 mi (2,945.45 km) |
| Napa to Cimarron Hills (Colorado) | 950.05 mi (1,528.95 km) |
| Napa to Cincinnati (Ohio) | 2,023.42 mi (3,256.38 km) |
| Napa to Cinco Ranch (Texas) | 1,623.73 mi (2,613.14 km) |
| Napa to Circleville (Ohio) | 2,100.23 mi (3,379.99 km) |
| Napa to Citrus (California) | 379.33 mi (610.47 km) |
| Napa to Citrus Heights (California) | 61.27 mi (98.61 km) |
| Napa to Citrus Park (Florida) | 2,383.62 mi (3,836.06 km) |
| Napa to Claiborne (Louisiana) | 1,732.86 mi (2,788.77 km) |
| Napa to Claremont (California) | 385.15 mi (619.84 km) |
| Napa to Claremont (New Hampshire) | 2,596.00 mi (4,177.86 km) |
| Napa to Claremore (Oklahoma) | 1,468.17 mi (2,362.79 km) |
| Napa to Clarksburg (Maryland) | 2,401.76 mi (3,865.26 km) |
| Napa to Clarksburg (West Virginia) | 2,241.14 mi (3,606.77 km) |
