| Grass Valley to Southern Pines (North Carolina) | 2,288.53 mi (3,683.03 km) |
| Grass Valley to Southfield (Michigan) | 1,971.45 mi (3,172.75 km) |
| Grass Valley to Southgate (Michigan) | 1,976.40 mi (3,180.71 km) |
| Grass Valley to Southlake (Texas) | 1,398.21 mi (2,250.20 km) |
| Grass Valley to Spanaway (Washington) | 548.39 mi (882.55 km) |
| Grass Valley to Spanish Fork (Utah) | 504.06 mi (811.20 km) |
| Grass Valley to Spanish Lake (Missouri) | 1,648.28 mi (2,652.65 km) |
| Grass Valley to Spanish Springs (Nevada) | 79.62 mi (128.13 km) |
| Grass Valley to Sparks (Nevada) | 75.32 mi (121.21 km) |
| Grass Valley to Spartanburg (South Carolina) | 2,159.95 mi (3,476.11 km) |
| Grass Valley to Spearfish (South Dakota) | 956.40 mi (1,539.18 km) |
| Grass Valley to Speedway (Indiana) | 1,843.93 mi (2,967.52 km) |
| Grass Valley to Spencer (Iowa) | 1,367.93 mi (2,201.47 km) |
| Grass Valley to Spokane (Washington) | 610.79 mi (982.97 km) |
| Grass Valley to Spokane Valley (Washington) | 613.51 mi (987.34 km) |
