| Keystone to Sugar Hill (Georgia) | 421.82 mi (678.86 km) |
| Keystone to Sugar Land (Texas) | 794.82 mi (1,279.14 km) |
| Keystone to Sugarland Run (Virginia) | 810.50 mi (1,304.38 km) |
| Keystone to Sugarmill Woods (Florida) | 41.80 mi (67.27 km) |
| Keystone to Suisun City (California) | 2,363.67 mi (3,803.95 km) |
| Keystone to Suitland (Maryland) | 809.12 mi (1,302.15 km) |
| Keystone to Sulphur (Louisiana) | 664.59 mi (1,069.56 km) |
| Keystone to Sulphur Springs (Texas) | 846.65 mi (1,362.56 km) |
| Keystone to Summerfield (Maryland) | 813.82 mi (1,309.71 km) |
| Keystone to Summerfield (North Carolina) | 579.18 mi (932.10 km) |
| Keystone to Summerlin South (Nevada) | 1,982.77 mi (3,190.96 km) |
| Keystone to Summerville (South Carolina) | 365.98 mi (588.99 km) |
| Keystone to Summit (Illinois) | 988.17 mi (1,590.31 km) |
| Keystone to Summit (New Jersey) | 986.93 mi (1,588.32 km) |
| Keystone to Sumner (Washington) | 2,498.64 mi (4,021.18 km) |
