| Champaign to Smyrna (Delaware) | 675.07 mi (1,086.42 km) |
| Champaign to Smyrna (Georgia) | 478.96 mi (770.81 km) |
| Champaign to Smyrna (Tennessee) | 301.78 mi (485.66 km) |
| Champaign to Snellville (Georgia) | 492.28 mi (792.24 km) |
| Champaign to Snoqualmie (Washington) | 1,734.66 mi (2,791.67 km) |
| Champaign to Snyder (Texas) | 867.62 mi (1,396.29 km) |
| Champaign to Socastee (South Carolina) | 676.99 mi (1,089.51 km) |
| Champaign to Socorro (Texas) | 1,161.60 mi (1,869.42 km) |
| Champaign to Soddy-Daisy (Tennessee) | 375.90 mi (604.95 km) |
| Champaign to Solana Beach (California) | 1,673.65 mi (2,693.48 km) |
| Champaign to Soledad (California) | 1,800.94 mi (2,898.34 km) |
| Champaign to Solon (Ohio) | 368.23 mi (592.60 km) |
| Champaign to Somers Point (New Jersey) | 727.75 mi (1,171.20 km) |
| Champaign to Somerset (Kentucky) | 287.99 mi (463.48 km) |
| Champaign to Somerset (New Jersey) | 725.41 mi (1,167.43 km) |
