| Napa to Cullman (Alabama) | 1,984.28 mi (3,193.39 km) |
| Napa to Culpeper (Virginia) | 2,375.52 mi (3,823.03 km) |
| Napa to Culver City (California) | 367.84 mi (591.99 km) |
| Napa to Cumberland (Maryland) | 2,317.62 mi (3,729.85 km) |
| Napa to Cupertino (California) | 69.17 mi (111.32 km) |
| Napa to Cutler Bay (Florida) | 2,587.36 mi (4,163.96 km) |
| Napa to Cutlerville (Michigan) | 1,932.29 mi (3,109.72 km) |
| Napa to Cuyahoga Falls (Ohio) | 2,156.13 mi (3,469.96 km) |
| Napa to Cypress (California) | 390.42 mi (628.33 km) |
| Napa to Cypress Gardens (Florida) | 2,433.23 mi (3,915.90 km) |
| Napa to Cypress Lake (Florida) | 2,470.04 mi (3,975.14 km) |
| Napa to D'Iberville (Mississippi) | 1,967.85 mi (3,166.95 km) |
| Napa to Dakota Ridge (Colorado) | 925.40 mi (1,489.29 km) |
| Napa to Dale City (Virginia) | 2,406.89 mi (3,873.52 km) |
| Napa to Dallas (Georgia) | 2,098.41 mi (3,377.07 km) |
