| Union Park to Siloam Springs (Arkansas) | 936.13 mi (1,506.55 km) |
| Union Park to Silver Firs (Washington) | 2,548.39 mi (4,101.24 km) |
| Union Park to Silver Spring (Maryland) | 760.41 mi (1,223.77 km) |
| Union Park to Silver Springs Shores (Florida) | 60.44 mi (97.27 km) |
| Union Park to Silverdale (Washington) | 2,568.36 mi (4,133.38 km) |
| Union Park to Silverton (Oregon) | 2,528.22 mi (4,068.78 km) |
| Union Park to Simi Valley (California) | 2,233.95 mi (3,595.19 km) |
| Union Park to Simpsonville (South Carolina) | 430.03 mi (692.07 km) |
| Union Park to Sioux City (Iowa) | 1,281.39 mi (2,062.20 km) |
| Union Park to Sioux Falls (South Dakota) | 1,344.23 mi (2,163.33 km) |
| Union Park to Skokie (Illinois) | 999.57 mi (1,608.65 km) |
| Union Park to Sleepy Hollow (New York) | 960.14 mi (1,545.19 km) |
| Union Park to Slidell (Louisiana) | 527.81 mi (849.44 km) |
| Union Park to Smithfield (North Carolina) | 508.85 mi (818.91 km) |
| Union Park to Smithfield (Utah) | 1,940.67 mi (3,123.21 km) |
