| Forest Grove to Southern Pines (North Carolina) | 2,376.68 mi (3,824.90 km) |
| Forest Grove to Southfield (Michigan) | 1,971.25 mi (3,172.42 km) |
| Forest Grove to Southgate (Michigan) | 1,980.36 mi (3,187.08 km) |
| Forest Grove to Southlake (Texas) | 1,627.10 mi (2,618.56 km) |
| Forest Grove to Spanaway (Washington) | 113.55 mi (182.74 km) |
| Forest Grove to Spanish Fork (Utah) | 690.22 mi (1,110.80 km) |
| Forest Grove to Spanish Lake (Missouri) | 1,734.85 mi (2,791.97 km) |
| Forest Grove to Spanish Springs (Nevada) | 441.45 mi (710.45 km) |
| Forest Grove to Sparks (Nevada) | 445.86 mi (717.53 km) |
| Forest Grove to Spartanburg (South Carolina) | 2,263.72 mi (3,643.10 km) |
| Forest Grove to Spearfish (South Dakota) | 942.94 mi (1,517.51 km) |
| Forest Grove to Speedway (Indiana) | 1,896.84 mi (3,052.67 km) |
| Forest Grove to Spencer (Iowa) | 1,384.22 mi (2,227.69 km) |
| Forest Grove to Spokane (Washington) | 307.39 mi (494.70 km) |
| Forest Grove to Spokane Valley (Washington) | 315.53 mi (507.80 km) |
