| Ontario to Laurinburg (North Carolina) | 2,161.10 mi (3,477.96 km) |
| Ontario to Lawndale (California) | 44.04 mi (70.88 km) |
| Ontario to Lawrence (Indiana) | 1,781.56 mi (2,867.14 km) |
| Ontario to Lawrence (Kansas) | 1,282.96 mi (2,064.73 km) |
| Ontario to Lawrence (Massachusetts) | 2,552.46 mi (4,107.79 km) |
| Ontario to Lawrenceburg (Kentucky) | 1,838.30 mi (2,958.46 km) |
| Ontario to Lawrenceburg (Tennessee) | 1,716.23 mi (2,762.00 km) |
| Ontario to Lawrenceville (Georgia) | 1,916.67 mi (3,084.58 km) |
| Ontario to Lawton (Oklahoma) | 1,093.82 mi (1,760.33 km) |
| Ontario to Layton (Utah) | 575.90 mi (926.83 km) |
| Ontario to Le Mars (Iowa) | 1,302.95 mi (2,096.89 km) |
| Ontario to League City (Texas) | 1,355.49 mi (2,181.46 km) |
| Ontario to Lealman (Florida) | 2,103.29 mi (3,384.92 km) |
| Ontario to Leander (Texas) | 1,175.67 mi (1,892.06 km) |
| Ontario to Leavenworth (Kansas) | 1,304.82 mi (2,099.91 km) |
