| McDonough to Sinop | 5,958.70 mi (9,589.60 km) |
| McDonough to Siran | 6,195.28 mi (9,970.35 km) |
| McDonough to Sirnak | 6,452.43 mi (10,384.18 km) |
| McDonough to Sirvan | 6,408.80 mi (10,313.97 km) |
| McDonough to Sivas | 6,137.91 mi (9,878.01 km) |
| McDonough to Sivasli | 5,905.47 mi (9,503.94 km) |
| McDonough to Siverek | 6,323.27 mi (10,176.31 km) |
| McDonough to Sivrice | 6,288.53 mi (10,120.40 km) |
| McDonough to Sivrihisar | 5,937.75 mi (9,555.89 km) |
| McDonough to Sogut | 5,857.48 mi (9,426.71 km) |
| McDonough to Sogutlu | 5,830.21 mi (9,382.82 km) |
| McDonough to Soke | 5,842.12 mi (9,401.98 km) |
| McDonough to Solhan | 6,327.16 mi (10,182.58 km) |
| McDonough to Soma | 5,788.29 mi (9,315.35 km) |
| McDonough to Sorgun | 6,064.89 mi (9,760.50 km) |
