| Gaithersburg to Sangeorgiu de Mures | 4,802.00 mi (7,728.07 km) |
| Gaithersburg to Sangeorz-Bai | 4,777.06 mi (7,687.94 km) |
| Gaithersburg to Sannicolau Mare | 4,670.10 mi (7,515.79 km) |
| Gaithersburg to Santana | 4,694.23 mi (7,554.63 km) |
| Gaithersburg to Satu Mare | 4,692.12 mi (7,551.24 km) |
| Gaithersburg to Scobinti | 4,861.44 mi (7,823.73 km) |
| Gaithersburg to Scornicesti | 4,885.91 mi (7,863.11 km) |
| Gaithersburg to Sebes | 4,790.94 mi (7,710.27 km) |
| Gaithersburg to Seini | 4,708.88 mi (7,578.22 km) |
| Gaithersburg to Sfantu-Gheorghe | 4,880.97 mi (7,855.17 km) |
| Gaithersburg to Sibiu | 4,820.42 mi (7,757.71 km) |
| Gaithersburg to Sighetu Marmatiei | 4,724.84 mi (7,603.89 km) |
| Gaithersburg to Sighisoara | 4,828.03 mi (7,769.96 km) |
| Gaithersburg to Simeria | 4,773.37 mi (7,682.00 km) |
| Gaithersburg to Sinaia | 4,893.08 mi (7,874.64 km) |
