| Ontario to Lovington (New Mexico) | 825.91 mi (1,329.17 km) |
| Ontario to Lowell (Indiana) | 1,715.50 mi (2,760.84 km) |
| Ontario to Lowell (Massachusetts) | 2,544.56 mi (4,095.07 km) |
| Ontario to Lower Burrell (Pennsylvania) | 2,113.80 mi (3,401.83 km) |
| Ontario to Lowes Island (Virginia) | 2,242.66 mi (3,609.22 km) |
| Ontario to Lubbock (Texas) | 902.17 mi (1,451.90 km) |
| Ontario to Lufkin (Texas) | 1,340.85 mi (2,157.89 km) |
| Ontario to Luling (Louisiana) | 1,617.88 mi (2,603.73 km) |
| Ontario to Lumberton (North Carolina) | 2,188.31 mi (3,521.75 km) |
| Ontario to Lumberton (Texas) | 1,390.38 mi (2,237.60 km) |
| Ontario to Lutz (Florida) | 2,109.24 mi (3,394.50 km) |
| Ontario to Lynbrook (New York) | 2,430.19 mi (3,911.01 km) |
| Ontario to Lynchburg (Virginia) | 2,152.56 mi (3,464.21 km) |
| Ontario to Lynden (Washington) | 1,059.78 mi (1,705.56 km) |
| Ontario to Lyndhurst (Ohio) | 2,022.81 mi (3,255.40 km) |
