| Ashtabula to Sinop | 5,401.39 mi (8,692.70 km) |
| Ashtabula to Siran | 5,634.10 mi (9,067.20 km) |
| Ashtabula to Sirnak | 5,890.49 mi (9,479.82 km) |
| Ashtabula to Sirvan | 5,846.47 mi (9,408.98 km) |
| Ashtabula to Sivas | 5,583.19 mi (8,985.28 km) |
| Ashtabula to Sivasli | 5,374.78 mi (8,649.87 km) |
| Ashtabula to Siverek | 5,768.78 mi (9,283.96 km) |
| Ashtabula to Sivrice | 5,731.97 mi (9,224.71 km) |
| Ashtabula to Sivrihisar | 5,398.26 mi (8,687.67 km) |
| Ashtabula to Sogut | 5,319.47 mi (8,560.87 km) |
| Ashtabula to Sogutlu | 5,288.12 mi (8,510.41 km) |
| Ashtabula to Soke | 5,320.97 mi (8,563.28 km) |
| Ashtabula to Solhan | 5,764.75 mi (9,277.46 km) |
| Ashtabula to Soma | 5,260.55 mi (8,466.04 km) |
| Ashtabula to Sorgun | 5,514.59 mi (8,874.87 km) |
