| Champaign to Sinop | 5,748.48 mi (9,251.28 km) |
| Champaign to Siran | 5,976.98 mi (9,619.02 km) |
| Champaign to Sirnak | 6,231.82 mi (10,029.14 km) |
| Champaign to Sirvan | 6,187.58 mi (9,957.95 km) |
| Champaign to Sivas | 5,931.89 mi (9,546.45 km) |
| Champaign to Sivasli | 5,741.02 mi (9,239.28 km) |
| Champaign to Siverek | 6,117.07 mi (9,844.48 km) |
| Champaign to Sivrice | 6,078.63 mi (9,782.61 km) |
| Champaign to Sivrihisar | 5,758.87 mi (9,268.01 km) |
| Champaign to Sogut | 5,681.30 mi (9,143.17 km) |
| Champaign to Sogutlu | 5,647.30 mi (9,088.45 km) |
| Champaign to Soke | 5,692.74 mi (9,161.58 km) |
| Champaign to Solhan | 6,106.06 mi (9,826.75 km) |
| Champaign to Soma | 5,628.85 mi (9,058.76 km) |
| Champaign to Sorgun | 5,867.04 mi (9,442.08 km) |
