| Popovo to Smyrna (Delaware) | 4,932.08 mi (7,937.42 km) |
| Popovo to Smyrna (Georgia) | 5,547.87 mi (8,928.43 km) |
| Popovo to Smyrna (Tennessee) | 5,520.02 mi (8,883.61 km) |
| Popovo to Snellville (Georgia) | 5,527.87 mi (8,896.25 km) |
| Popovo to Snoqualmie (Washington) | 5,863.15 mi (9,435.83 km) |
| Popovo to Snyder (Texas) | 6,212.31 mi (9,997.74 km) |
| Popovo to Socastee (South Carolina) | 5,333.48 mi (8,583.41 km) |
| Popovo to Socorro (Texas) | 6,448.62 mi (10,378.05 km) |
| Popovo to Soddy-Daisy (Tennessee) | 5,503.83 mi (8,857.56 km) |
| Popovo to Solana Beach (California) | 6,680.25 mi (10,750.82 km) |
| Popovo to Soledad (California) | 6,559.29 mi (10,556.16 km) |
| Popovo to Solon (Ohio) | 5,061.04 mi (8,144.95 km) |
| Popovo to Somers Point (New Jersey) | 4,890.66 mi (7,870.76 km) |
| Popovo to Somerset (Kentucky) | 5,390.96 mi (8,675.91 km) |
| Popovo to Somerset (New Jersey) | 4,832.76 mi (7,777.58 km) |
