| Smolyan to Southern Pines (North Carolina) | 5,285.18 mi (8,505.67 km) |
| Smolyan to Southfield (Michigan) | 5,102.86 mi (8,212.26 km) |
| Smolyan to Southgate (Michigan) | 5,113.40 mi (8,229.23 km) |
| Smolyan to Southlake (Texas) | 6,100.28 mi (9,817.46 km) |
| Smolyan to Spanaway (Washington) | 5,986.53 mi (9,634.39 km) |
| Smolyan to Spanish Fork (Utah) | 6,164.03 mi (9,920.05 km) |
| Smolyan to Spanish Lake (Missouri) | 5,541.21 mi (8,917.71 km) |
| Smolyan to Spanish Springs (Nevada) | 6,394.57 mi (10,291.06 km) |
| Smolyan to Sparks (Nevada) | 6,400.82 mi (10,301.13 km) |
| Smolyan to Spartanburg (South Carolina) | 5,402.13 mi (8,693.89 km) |
| Smolyan to Spearfish (South Dakota) | 5,690.94 mi (9,158.68 km) |
| Smolyan to Speedway (Indiana) | 5,343.07 mi (8,598.84 km) |
| Smolyan to Spencer (Iowa) | 5,492.93 mi (8,840.02 km) |
| Smolyan to Spokane (Washington) | 5,849.77 mi (9,414.29 km) |
| Smolyan to Spokane Valley (Washington) | 5,845.78 mi (9,407.87 km) |
