| Radford to Sinop | 5,633.93 mi (9,066.94 km) |
| Radford to Siran | 5,870.31 mi (9,447.35 km) |
| Radford to Sirnak | 6,127.44 mi (9,861.16 km) |
| Radford to Sirvan | 6,083.79 mi (9,790.92 km) |
| Radford to Sivas | 5,813.35 mi (9,355.69 km) |
| Radford to Sivasli | 5,583.79 mi (8,986.24 km) |
| Radford to Siverek | 5,998.76 mi (9,654.08 km) |
| Radford to Sivrice | 5,963.85 mi (9,597.90 km) |
| Radford to Sivrihisar | 5,614.80 mi (9,036.15 km) |
| Radford to Sogut | 5,534.71 mi (8,907.25 km) |
| Radford to Sogutlu | 5,506.90 mi (8,862.50 km) |
| Radford to Soke | 5,522.02 mi (8,886.83 km) |
| Radford to Solhan | 6,002.13 mi (9,659.50 km) |
| Radford to Soma | 5,467.03 mi (8,798.34 km) |
| Radford to Sorgun | 5,740.72 mi (9,238.80 km) |
