| Helena to Sinop | 5,990.68 mi (9,641.07 km) |
| Helena to Siran | 6,182.39 mi (9,949.60 km) |
| Helena to Sirnak | 6,413.76 mi (10,321.96 km) |
| Helena to Sirvan | 6,370.90 mi (10,252.98 km) |
| Helena to Sivas | 6,172.63 mi (9,933.89 km) |
| Helena to Sivasli | 6,099.71 mi (9,816.54 km) |
| Helena to Siverek | 6,344.83 mi (10,211.02 km) |
| Helena to Sivrice | 6,299.30 mi (10,137.74 km) |
| Helena to Sivrihisar | 6,080.58 mi (9,785.75 km) |
| Helena to Sogut | 6,014.93 mi (9,680.09 km) |
| Helena to Sogutlu | 5,966.35 mi (9,601.90 km) |
| Helena to Soke | 6,091.29 mi (9,802.99 km) |
| Helena to Solhan | 6,295.27 mi (10,131.26 km) |
| Helena to Soma | 6,007.21 mi (9,667.67 km) |
| Helena to Sorgun | 6,133.29 mi (9,870.58 km) |
