| Mack to Smyrna (Delaware) | 485.45 mi (781.26 km) |
| Mack to Smyrna (Georgia) | 365.33 mi (587.94 km) |
| Mack to Smyrna (Tennessee) | 241.90 mi (389.31 km) |
| Mack to Snellville (Georgia) | 367.63 mi (591.64 km) |
| Mack to Snoqualmie (Washington) | 1,934.25 mi (3,112.87 km) |
| Mack to Snyder (Texas) | 1,009.11 mi (1,624.00 km) |
| Mack to Socastee (South Carolina) | 491.54 mi (791.06 km) |
| Mack to Socorro (Texas) | 1,317.40 mi (2,120.16 km) |
| Mack to Soddy-Daisy (Tennessee) | 270.29 mi (434.99 km) |
| Mack to Solana Beach (California) | 1,857.75 mi (2,989.76 km) |
| Mack to Soledad (California) | 1,996.82 mi (3,213.57 km) |
| Mack to Solon (Ohio) | 230.32 mi (370.66 km) |
| Mack to Somers Point (New Jersey) | 538.93 mi (867.32 km) |
| Mack to Somerset (Kentucky) | 142.78 mi (229.78 km) |
| Mack to Somerset (New Jersey) | 547.85 mi (881.68 km) |
