| Napa to Superior (Colorado) | 924.43 mi (1,487.73 km) |
| Napa to Superior (Wisconsin) | 1,632.87 mi (2,627.86 km) |
| Napa to Surprise (Arizona) | 635.80 mi (1,023.22 km) |
| Napa to Susanville (California) | 172.18 mi (277.09 km) |
| Napa to Sussex (Wisconsin) | 1,802.79 mi (2,901.31 km) |
| Napa to Suwanee (Georgia) | 2,137.16 mi (3,439.43 km) |
| Napa to Swansea (Illinois) | 1,740.18 mi (2,800.56 km) |
| Napa to Sweetwater (Florida) | 2,578.16 mi (4,149.15 km) |
| Napa to Sweetwater (Texas) | 1,293.59 mi (2,081.84 km) |
| Napa to Sycamore (Illinois) | 1,782.23 mi (2,868.22 km) |
| Napa to Sylacauga (Alabama) | 2,038.79 mi (3,281.12 km) |
| Napa to Sylvania (Ohio) | 2,038.88 mi (3,281.26 km) |
| Napa to Syosset (New York) | 2,571.64 mi (4,138.66 km) |
| Napa to Syracuse (New York) | 2,410.33 mi (3,879.05 km) |
| Napa to Syracuse (Utah) | 576.64 mi (928.01 km) |
