| Barcelona to Smyrna (Delaware) | 3,953.04 mi (6,361.80 km) |
| Barcelona to Smyrna (Georgia) | 4,570.72 mi (7,355.87 km) |
| Barcelona to Smyrna (Tennessee) | 4,580.55 mi (7,371.69 km) |
| Barcelona to Snellville (Georgia) | 4,546.87 mi (7,317.49 km) |
| Barcelona to Snoqualmie (Washington) | 5,404.30 mi (8,697.38 km) |
| Barcelona to Snyder (Texas) | 5,363.36 mi (8,631.50 km) |
| Barcelona to Socastee (South Carolina) | 4,315.68 mi (6,945.42 km) |
| Barcelona to Socorro (Texas) | 5,643.36 mi (9,082.11 km) |
| Barcelona to Soddy-Daisy (Tennessee) | 4,546.33 mi (7,316.60 km) |
| Barcelona to Solana Beach (California) | 6,017.45 mi (9,684.14 km) |
| Barcelona to Soledad (California) | 5,983.16 mi (9,628.97 km) |
| Barcelona to Solon (Ohio) | 4,147.20 mi (6,674.27 km) |
| Barcelona to Somers Point (New Jersey) | 3,905.45 mi (6,285.22 km) |
| Barcelona to Somerset (Kentucky) | 4,449.29 mi (7,160.44 km) |
| Barcelona to Somerset (New Jersey) | 3,861.25 mi (6,214.07 km) |
