| Riverdale to Superior (Colorado) | 1,226.52 mi (1,973.89 km) |
| Riverdale to Superior (Wisconsin) | 992.44 mi (1,597.18 km) |
| Riverdale to Surprise (Arizona) | 1,608.33 mi (2,588.36 km) |
| Riverdale to Susanville (California) | 2,038.14 mi (3,280.07 km) |
| Riverdale to Sussex (Wisconsin) | 692.57 mi (1,114.59 km) |
| Riverdale to Suwanee (Georgia) | 38.94 mi (62.67 km) |
| Riverdale to Swansea (Illinois) | 464.24 mi (747.13 km) |
| Riverdale to Sweetwater (Florida) | 589.77 mi (949.15 km) |
| Riverdale to Sweetwater (Texas) | 929.06 mi (1,495.18 km) |
| Riverdale to Sycamore (Illinois) | 627.32 mi (1,009.58 km) |
| Riverdale to Sylacauga (Alabama) | 110.04 mi (177.09 km) |
| Riverdale to Sylvania (Ohio) | 564.14 mi (907.90 km) |
| Riverdale to Syosset (New York) | 780.92 mi (1,256.77 km) |
| Riverdale to Syracuse (New York) | 792.59 mi (1,275.55 km) |
| Riverdale to Syracuse (Utah) | 1,598.07 mi (2,571.85 km) |
