| River Ridge to Smyrna (Delaware) | 1,049.37 mi (1,688.79 km) |
| River Ridge to Smyrna (Georgia) | 429.58 mi (691.34 km) |
| River Ridge to Smyrna (Tennessee) | 467.07 mi (751.67 km) |
| River Ridge to Snellville (Georgia) | 453.09 mi (729.18 km) |
| River Ridge to Snoqualmie (Washington) | 2,069.05 mi (3,329.82 km) |
| River Ridge to Snyder (Texas) | 658.66 mi (1,060.01 km) |
| River Ridge to Socastee (South Carolina) | 706.30 mi (1,136.67 km) |
| River Ridge to Socorro (Texas) | 958.11 mi (1,541.93 km) |
| River Ridge to Soddy-Daisy (Tennessee) | 469.15 mi (755.02 km) |
| River Ridge to Solana Beach (California) | 1,602.49 mi (2,578.96 km) |
| River Ridge to Soledad (California) | 1,845.53 mi (2,970.10 km) |
| River Ridge to Solon (Ohio) | 929.53 mi (1,495.94 km) |
| River Ridge to Somers Point (New Jersey) | 1,095.43 mi (1,762.93 km) |
| River Ridge to Somerset (Kentucky) | 588.51 mi (947.12 km) |
| River Ridge to Somerset (New Jersey) | 1,145.00 mi (1,842.70 km) |
