| Formia to Smyrna (Delaware) | 4,478.18 mi (7,206.93 km) |
| Formia to Smyrna (Georgia) | 5,098.17 mi (8,204.70 km) |
| Formia to Smyrna (Tennessee) | 5,093.86 mi (8,197.78 km) |
| Formia to Snellville (Georgia) | 5,075.63 mi (8,168.44 km) |
| Formia to Snoqualmie (Washington) | 5,723.13 mi (9,210.49 km) |
| Formia to Snyder (Texas) | 5,846.10 mi (9,408.39 km) |
| Formia to Socastee (South Carolina) | 4,856.88 mi (7,816.40 km) |
| Formia to Socorro (Texas) | 6,110.69 mi (9,834.21 km) |
| Formia to Soddy-Daisy (Tennessee) | 5,066.31 mi (8,153.44 km) |
| Formia to Solana Beach (California) | 6,429.82 mi (10,347.79 km) |
| Formia to Soledad (California) | 6,358.79 mi (10,233.49 km) |
| Formia to Solon (Ohio) | 4,648.05 mi (7,480.32 km) |
| Formia to Somers Point (New Jersey) | 4,432.70 mi (7,133.74 km) |
| Formia to Somerset (Kentucky) | 4,962.75 mi (7,986.77 km) |
| Formia to Somerset (New Jersey) | 4,383.00 mi (7,053.76 km) |
