| Boulder City to Sangeorgiu de Mures | 6,211.12 mi (9,995.84 km) |
| Boulder City to Sangeorz-Bai | 6,168.25 mi (9,926.84 km) |
| Boulder City to Sannicolau Mare | 6,138.42 mi (9,878.84 km) |
| Boulder City to Santana | 6,145.99 mi (9,891.01 km) |
| Boulder City to Satu Mare | 6,099.10 mi (9,815.56 km) |
| Boulder City to Scobinti | 6,221.56 mi (10,012.63 km) |
| Boulder City to Scornicesti | 6,329.49 mi (10,186.34 km) |
| Boulder City to Sebes | 6,222.82 mi (10,014.66 km) |
| Boulder City to Seini | 6,111.51 mi (9,835.53 km) |
| Boulder City to Sfantu-Gheorghe | 6,284.49 mi (10,113.91 km) |
| Boulder City to Sibiu | 6,247.54 mi (10,054.44 km) |
| Boulder City to Sighetu Marmatiei | 6,116.10 mi (9,842.91 km) |
| Boulder City to Sighisoara | 6,238.83 mi (10,040.43 km) |
| Boulder City to Simeria | 6,214.67 mi (10,001.55 km) |
| Boulder City to Sinaia | 6,309.04 mi (10,153.42 km) |
