| Westerville to Sinop | 5,565.63 mi (8,957.01 km) |
| Westerville to Siran | 5,798.31 mi (9,331.47 km) |
| Westerville to Sirnak | 6,054.68 mi (9,744.06 km) |
| Westerville to Sirvan | 6,010.65 mi (9,673.21 km) |
| Westerville to Sivas | 5,747.42 mi (9,249.58 km) |
| Westerville to Sivasli | 5,538.25 mi (8,912.95 km) |
| Westerville to Siverek | 5,933.02 mi (9,548.27 km) |
| Westerville to Sivrice | 5,896.20 mi (9,489.02 km) |
| Westerville to Sivrihisar | 5,562.14 mi (8,951.40 km) |
| Westerville to Sogut | 5,483.28 mi (8,824.49 km) |
| Westerville to Sogutlu | 5,452.08 mi (8,774.28 km) |
| Westerville to Soke | 5,483.87 mi (8,825.43 km) |
| Westerville to Solhan | 5,928.93 mi (9,541.70 km) |
| Westerville to Soma | 5,423.85 mi (8,728.84 km) |
| Westerville to Sorgun | 5,678.77 mi (9,139.09 km) |
