| Boadilla del Monte to Smyrna (Delaware) | 3,694.54 mi (5,945.78 km) |
| Boadilla del Monte to Smyrna (Georgia) | 4,308.25 mi (6,933.45 km) |
| Boadilla del Monte to Smyrna (Tennessee) | 4,328.14 mi (6,965.48 km) |
| Boadilla del Monte to Snellville (Georgia) | 4,283.52 mi (6,893.66 km) |
| Boadilla del Monte to Snoqualmie (Washington) | 5,271.06 mi (8,482.94 km) |
| Boadilla del Monte to Snyder (Texas) | 5,128.57 mi (8,253.64 km) |
| Boadilla del Monte to Socastee (South Carolina) | 4,043.84 mi (6,507.92 km) |
| Boadilla del Monte to Socorro (Texas) | 5,417.32 mi (8,718.34 km) |
| Boadilla del Monte to Soddy-Daisy (Tennessee) | 4,289.30 mi (6,902.96 km) |
| Boadilla del Monte to Solana Beach (California) | 5,823.74 mi (9,372.41 km) |
| Boadilla del Monte to Soledad (California) | 5,811.85 mi (9,353.27 km) |
| Boadilla del Monte to Solon (Ohio) | 3,905.49 mi (6,285.28 km) |
| Boadilla del Monte to Somers Point (New Jersey) | 3,645.57 mi (5,866.98 km) |
| Boadilla del Monte to Somerset (Kentucky) | 4,197.29 mi (6,754.89 km) |
| Boadilla del Monte to Somerset (New Jersey) | 3,605.67 mi (5,802.76 km) |
