| Napa to Cloverleaf (Texas) | 1,653.22 mi (2,660.60 km) |
| Napa to Cloverly (Maryland) | 2,417.52 mi (3,890.63 km) |
| Napa to Clovis (California) | 175.69 mi (282.75 km) |
| Napa to Clovis (New Mexico) | 1,093.87 mi (1,760.41 km) |
| Napa to Clute (Texas) | 1,666.80 mi (2,682.46 km) |
| Napa to Coachella (California) | 468.64 mi (754.20 km) |
| Napa to Coalinga (California) | 184.41 mi (296.77 km) |
| Napa to Coamo (Puerto Rico) | 3,620.35 mi (5,826.40 km) |
| Napa to Coatesville (Pennsylvania) | 2,465.09 mi (3,967.18 km) |
| Napa to Cockeysville (Maryland) | 2,430.89 mi (3,912.14 km) |
| Napa to Cocoa (Florida) | 2,470.88 mi (3,976.49 km) |
| Napa to Cocoa Beach (Florida) | 2,480.01 mi (3,991.19 km) |
| Napa to Coconut Creek (Florida) | 2,571.26 mi (4,138.04 km) |
| Napa to Coeur d'Alene (Idaho) | 706.54 mi (1,137.06 km) |
| Napa to Cohoes (New York) | 2,534.98 mi (4,079.65 km) |
