| Boadilla del Monte to Serik | 1,889.86 mi (3,041.44 km) |
| Boadilla del Monte to Serinhisar | 1,780.08 mi (2,864.76 km) |
| Boadilla del Monte to Serinyol | 2,169.56 mi (3,491.57 km) |
| Boadilla del Monte to Seydisehir | 1,918.62 mi (3,087.73 km) |
| Boadilla del Monte to Seyhan | 2,110.15 mi (3,395.96 km) |
| Boadilla del Monte to Seyitgazi | 1,821.13 mi (2,930.83 km) |
| Boadilla del Monte to Siirt | 2,433.03 mi (3,915.58 km) |
| Boadilla del Monte to Sile | 1,741.68 mi (2,802.96 km) |
| Boadilla del Monte to Silifke | 2,050.51 mi (3,299.98 km) |
| Boadilla del Monte to Silivri | 1,672.71 mi (2,691.96 km) |
| Boadilla del Monte to Silopi | 2,475.54 mi (3,984.00 km) |
| Boadilla del Monte to Simav | 1,737.95 mi (2,796.96 km) |
| Boadilla del Monte to Sinanpasa | 1,809.60 mi (2,912.27 km) |
| Boadilla del Monte to Sindirgi | 1,693.32 mi (2,725.13 km) |
| Boadilla del Monte to Sinop | 2,013.78 mi (3,240.86 km) |
