| Oupeye to Siran | 1,758.88 mi (2,830.64 km) |
| Oupeye to Sirnak | 2,013.20 mi (3,239.92 km) |
| Oupeye to Sirvan | 1,971.40 mi (3,172.66 km) |
| Oupeye to Sivas | 1,686.88 mi (2,714.77 km) |
| Oupeye to Sivasli | 1,442.71 mi (2,321.82 km) |
| Oupeye to Siverek | 1,869.78 mi (3,009.12 km) |
| Oupeye to Sivrice | 1,839.30 mi (2,960.07 km) |
| Oupeye to Sivrihisar | 1,472.02 mi (2,368.99 km) |
| Oupeye to Sogut | 1,391.65 mi (2,239.64 km) |
| Oupeye to Sogutlu | 1,365.49 mi (2,197.55 km) |
| Oupeye to Soke | 1,391.76 mi (2,239.82 km) |
| Oupeye to Solhan | 1,891.54 mi (3,044.13 km) |
| Oupeye to Soma | 1,328.42 mi (2,137.89 km) |
| Oupeye to Sorgun | 1,607.15 mi (2,586.45 km) |
| Oupeye to Suhut | 1,474.41 mi (2,372.84 km) |
