| Houston to Santa Venerina | 5,969.29 mi (9,606.64 km) |
| Houston to Santeramo in Colle | 5,913.93 mi (9,517.55 km) |
| Houston to Santo Stefano di Magra | 5,494.80 mi (8,843.02 km) |
| Houston to Santo Stino di Livenza | 5,550.92 mi (8,933.34 km) |
| Houston to Sarezzo | 5,452.79 mi (8,775.42 km) |
| Houston to Sarno | 5,821.85 mi (9,369.36 km) |
| Houston to Saronno | 5,405.62 mi (8,699.50 km) |
| Houston to Sarzana | 5,498.47 mi (8,848.93 km) |
| Houston to Sassari | 5,559.87 mi (8,947.75 km) |
| Houston to Sasso Marconi | 5,542.06 mi (8,919.08 km) |
| Houston to Sassuolo | 5,517.10 mi (8,878.92 km) |
| Houston to Sava | 5,964.09 mi (9,598.28 km) |
| Houston to Saviano | 5,813.61 mi (9,356.10 km) |
| Houston to Savigliano | 5,380.86 mi (8,659.65 km) |
| Houston to Savignano sul Panaro | 5,529.95 mi (8,899.59 km) |
