| Watertown Town to Lovington (New Mexico) | 1,862.96 mi (2,998.14 km) |
| Watertown Town to Lowell (Indiana) | 838.21 mi (1,348.97 km) |
| Watertown Town to Lowell (Massachusetts) | 19.98 mi (32.16 km) |
| Watertown Town to Lower Burrell (Pennsylvania) | 458.64 mi (738.10 km) |
| Watertown Town to Lowes Island (Virginia) | 396.45 mi (638.03 km) |
| Watertown Town to Lubbock (Texas) | 1,768.33 mi (2,845.85 km) |
| Watertown Town to Lufkin (Texas) | 1,501.83 mi (2,416.96 km) |
| Watertown Town to Luling (Louisiana) | 1,368.06 mi (2,201.68 km) |
| Watertown Town to Lumberton (North Carolina) | 681.74 mi (1,097.16 km) |
| Watertown Town to Lumberton (Texas) | 1,523.34 mi (2,451.58 km) |
| Watertown Town to Lutz (Florida) | 1,168.49 mi (1,880.50 km) |
| Watertown Town to Lynbrook (New York) | 175.14 mi (281.86 km) |
| Watertown Town to Lynchburg (Virginia) | 545.83 mi (878.44 km) |
| Watertown Town to Lynden (Washington) | 2,468.98 mi (3,973.44 km) |
| Watertown Town to Lyndhurst (Ohio) | 533.03 mi (857.82 km) |
