| Forest Grove to Smyrna (Delaware) | 2,424.93 mi (3,902.55 km) |
| Forest Grove to Smyrna (Georgia) | 2,179.00 mi (3,506.76 km) |
| Forest Grove to Smyrna (Tennessee) | 2,005.37 mi (3,227.33 km) |
| Forest Grove to Snellville (Georgia) | 2,203.87 mi (3,546.79 km) |
| Forest Grove to Snoqualmie (Washington) | 151.08 mi (243.14 km) |
| Forest Grove to Snyder (Texas) | 1,474.68 mi (2,373.27 km) |
| Forest Grove to Socastee (South Carolina) | 2,450.83 mi (3,944.24 km) |
| Forest Grove to Socorro (Texas) | 1,317.03 mi (2,119.56 km) |
| Forest Grove to Soddy-Daisy (Tennessee) | 2,095.82 mi (3,372.89 km) |
| Forest Grove to Solana Beach (California) | 919.95 mi (1,480.52 km) |
| Forest Grove to Soledad (California) | 634.13 mi (1,020.53 km) |
| Forest Grove to Solon (Ohio) | 2,085.63 mi (3,356.49 km) |
| Forest Grove to Somers Point (New Jersey) | 2,472.31 mi (3,978.80 km) |
| Forest Grove to Somerset (Kentucky) | 2,059.73 mi (3,314.81 km) |
| Forest Grove to Somerset (New Jersey) | 2,442.01 mi (3,930.03 km) |
