| Napa to Somersworth (New Hampshire) | 2,669.34 mi (4,295.88 km) |
| Napa to Somerton (Arizona) | 580.97 mi (934.98 km) |
| Napa to Somerville (Massachusetts) | 2,670.16 mi (4,297.22 km) |
| Napa to Somerville (New Jersey) | 2,518.67 mi (4,053.40 km) |
| Napa to Sonoma (California) | 8.63 mi (13.88 km) |
| Napa to Soquel (California) | 91.85 mi (147.82 km) |
| Napa to South Bend (Indiana) | 1,907.67 mi (3,070.09 km) |
| Napa to South Bradenton (Florida) | 2,402.44 mi (3,866.36 km) |
| Napa to South Burlington (Vermont) | 2,541.05 mi (4,089.42 km) |
| Napa to South Charleston (West Virginia) | 2,181.86 mi (3,511.36 km) |
| Napa to South Daytona (Florida) | 2,433.75 mi (3,916.74 km) |
| Napa to South El Monte (California) | 377.28 mi (607.17 km) |
| Napa to South Elgin (Illinois) | 1,801.15 mi (2,898.67 km) |
| Napa to South Euclid (Ohio) | 2,152.45 mi (3,464.03 km) |
| Napa to South Farmingdale (New York) | 2,575.92 mi (4,145.54 km) |
