| Boone to Sangeorgiu de Mures | 5,116.81 mi (8,234.72 km) |
| Boone to Sangeorz-Bai | 5,091.42 mi (8,193.85 km) |
| Boone to Sannicolau Mare | 4,985.82 mi (8,023.91 km) |
| Boone to Santana | 5,009.72 mi (8,062.36 km) |
| Boone to Satu Mare | 5,006.70 mi (8,057.51 km) |
| Boone to Scobinti | 5,175.15 mi (8,328.60 km) |
| Boone to Scornicesti | 5,201.49 mi (8,370.99 km) |
| Boone to Sebes | 5,106.20 mi (8,217.64 km) |
| Boone to Seini | 5,023.39 mi (8,084.37 km) |
| Boone to Sfantu-Gheorghe | 5,195.79 mi (8,361.82 km) |
| Boone to Sibiu | 5,135.63 mi (8,264.99 km) |
| Boone to Sighetu Marmatiei | 5,039.09 mi (8,109.64 km) |
| Boone to Sighisoara | 5,142.92 mi (8,276.73 km) |
| Boone to Simeria | 5,088.78 mi (8,189.60 km) |
| Boone to Sinaia | 5,208.17 mi (8,381.74 km) |
