| Middletown to Smyrna (Delaware) | 467.63 mi (752.57 km) |
| Middletown to Smyrna (Georgia) | 389.78 mi (627.28 km) |
| Middletown to Smyrna (Tennessee) | 271.23 mi (436.50 km) |
| Middletown to Snellville (Georgia) | 390.69 mi (628.76 km) |
| Middletown to Snoqualmie (Washington) | 1,936.86 mi (3,117.07 km) |
| Middletown to Snyder (Texas) | 1,033.66 mi (1,663.52 km) |
| Middletown to Socastee (South Carolina) | 499.59 mi (804.01 km) |
| Middletown to Socorro (Texas) | 1,340.53 mi (2,157.37 km) |
| Middletown to Soddy-Daisy (Tennessee) | 296.71 mi (477.52 km) |
| Middletown to Solana Beach (California) | 1,875.87 mi (3,018.92 km) |
| Middletown to Soledad (California) | 2,010.89 mi (3,236.21 km) |
| Middletown to Solon (Ohio) | 201.47 mi (324.24 km) |
| Middletown to Somers Point (New Jersey) | 520.89 mi (838.28 km) |
| Middletown to Somerset (Kentucky) | 167.73 mi (269.93 km) |
| Middletown to Somerset (New Jersey) | 526.40 mi (847.16 km) |
