| Waltham to Los Alamitos (California) | 2,580.08 mi (4,152.24 km) |
| Waltham to Los Alamos (New Mexico) | 1,916.32 mi (3,084.02 km) |
| Waltham to Los Altos (California) | 2,678.29 mi (4,310.30 km) |
| Waltham to Los Angeles (California) | 2,587.78 mi (4,164.63 km) |
| Waltham to Los Banos (California) | 2,623.63 mi (4,222.33 km) |
| Waltham to Los Gatos (California) | 2,675.10 mi (4,305.16 km) |
| Waltham to Los Lunas (New Mexico) | 1,973.34 mi (3,175.78 km) |
| Waltham to Los Osos (California) | 2,673.96 mi (4,303.32 km) |
| Waltham to Loudoun Valley Estates (Virginia) | 403.87 mi (649.96 km) |
| Waltham to Louisville (Colorado) | 1,759.15 mi (2,831.08 km) |
| Waltham to Louisville (Kentucky) | 812.22 mi (1,307.14 km) |
| Waltham to Lovejoy (Georgia) | 941.44 mi (1,515.10 km) |
| Waltham to Loveland (Colorado) | 1,746.44 mi (2,810.63 km) |
| Waltham to Loveland (Ohio) | 713.73 mi (1,148.64 km) |
| Waltham to Loves Park (Illinois) | 904.80 mi (1,456.14 km) |
