| Waltham to Secaucus (New Jersey) | 183.38 mi (295.13 km) |
| Waltham to Security-Widefield (Colorado) | 1,763.09 mi (2,837.42 km) |
| Waltham to Sedalia (Missouri) | 1,178.74 mi (1,897.01 km) |
| Waltham to Sedro-Woolley (Washington) | 2,460.45 mi (3,959.72 km) |
| Waltham to Seguin (Texas) | 1,725.17 mi (2,776.39 km) |
| Waltham to Selden (New York) | 140.26 mi (225.73 km) |
| Waltham to Selma (Alabama) | 1,104.07 mi (1,776.83 km) |
| Waltham to Selma (California) | 2,575.58 mi (4,145.00 km) |
| Waltham to Selma (Texas) | 1,741.64 mi (2,802.90 km) |
| Waltham to Seminole (Florida) | 1,195.55 mi (1,924.05 km) |
| Waltham to Seven Hills (Ohio) | 540.73 mi (870.23 km) |
| Waltham to Seven Oaks (South Carolina) | 786.96 mi (1,266.49 km) |
| Waltham to Severn (Maryland) | 363.15 mi (584.44 km) |
| Waltham to Severna Park (Maryland) | 360.15 mi (579.61 km) |
| Waltham to Sevierville (Tennessee) | 797.52 mi (1,283.48 km) |
