| Napa to Oxford (Alabama) | 2,050.12 mi (3,299.35 km) |
| Napa to Oxford (Mississippi) | 1,834.34 mi (2,952.08 km) |
| Napa to Oxford (Ohio) | 2,006.43 mi (3,229.04 km) |
| Napa to Oxnard (California) | 332.37 mi (534.90 km) |
| Napa to Oxon Hill (Maryland) | 2,424.09 mi (3,901.20 km) |
| Napa to Ozark (Alabama) | 2,116.30 mi (3,405.85 km) |
| Napa to Ozark (Missouri) | 1,586.57 mi (2,553.34 km) |
| Napa to Pace (Florida) | 2,057.26 mi (3,310.83 km) |
| Napa to Pacific Grove (California) | 117.80 mi (189.58 km) |
| Napa to Pacifica (California) | 48.38 mi (77.87 km) |
| Napa to Paducah (Kentucky) | 1,832.13 mi (2,948.53 km) |
| Napa to Pahrump (Nevada) | 374.98 mi (603.48 km) |
| Napa to Painesville (Ohio) | 2,164.47 mi (3,483.37 km) |
| Napa to Palatine (Illinois) | 1,814.50 mi (2,920.16 km) |
| Napa to Palatka (Florida) | 2,383.17 mi (3,835.34 km) |
