| Riverdale to Southern Pines (North Carolina) | 306.82 mi (493.78 km) |
| Riverdale to Southfield (Michigan) | 618.95 mi (996.11 km) |
| Riverdale to Southgate (Michigan) | 600.61 mi (966.58 km) |
| Riverdale to Southlake (Texas) | 736.80 mi (1,185.77 km) |
| Riverdale to Spanaway (Washington) | 2,182.03 mi (3,511.63 km) |
| Riverdale to Spanish Fork (Utah) | 1,565.19 mi (2,518.93 km) |
| Riverdale to Spanish Lake (Missouri) | 484.39 mi (779.55 km) |
| Riverdale to Spanish Springs (Nevada) | 1,986.95 mi (3,197.68 km) |
| Riverdale to Sparks (Nevada) | 1,989.34 mi (3,201.53 km) |
| Riverdale to Spartanburg (South Carolina) | 170.98 mi (275.17 km) |
| Riverdale to Spearfish (South Dakota) | 1,280.99 mi (2,061.56 km) |
| Riverdale to Speedway (Indiana) | 442.29 mi (711.80 km) |
| Riverdale to Spencer (Iowa) | 880.08 mi (1,416.36 km) |
| Riverdale to Spokane (Washington) | 1,965.93 mi (3,163.85 km) |
| Riverdale to Spokane Valley (Washington) | 1,957.04 mi (3,149.55 km) |
