| Herndon to Sangeorgiu de Mures | 4,816.61 mi (7,751.58 km) |
| Herndon to Sangeorz-Bai | 4,791.69 mi (7,711.49 km) |
| Herndon to Sannicolau Mare | 4,684.63 mi (7,539.19 km) |
| Herndon to Santana | 4,708.79 mi (7,578.07 km) |
| Herndon to Satu Mare | 4,706.74 mi (7,574.77 km) |
| Herndon to Scobinti | 4,876.09 mi (7,847.31 km) |
| Herndon to Scornicesti | 4,900.46 mi (7,886.53 km) |
| Herndon to Sebes | 4,805.52 mi (7,733.74 km) |
| Herndon to Seini | 4,723.51 mi (7,601.75 km) |
| Herndon to Sfantu-Gheorghe | 4,895.58 mi (7,878.68 km) |
| Herndon to Sibiu | 4,835.00 mi (7,781.18 km) |
| Herndon to Sighetu Marmatiei | 4,739.47 mi (7,627.44 km) |
| Herndon to Sighisoara | 4,842.63 mi (7,793.46 km) |
| Herndon to Simeria | 4,787.94 mi (7,705.45 km) |
| Herndon to Sinaia | 4,907.67 mi (7,898.13 km) |
