| Ontario to Lindon (Utah) | 542.49 mi (873.06 km) |
| Ontario to Lindsay (California) | 171.70 mi (276.33 km) |
| Ontario to Linganore (Maryland) | 2,243.80 mi (3,611.04 km) |
| Ontario to Lino Lakes (Minnesota) | 1,506.14 mi (2,423.90 km) |
| Ontario to Linthicum (Maryland) | 2,278.78 mi (3,667.34 km) |
| Ontario to Linton Hall (Virginia) | 2,232.15 mi (3,592.30 km) |
| Ontario to Lisle (Illinois) | 1,686.01 mi (2,713.37 km) |
| Ontario to Lithia Springs (Georgia) | 1,881.64 mi (3,028.20 km) |
| Ontario to Little Canada (Minnesota) | 1,502.28 mi (2,417.69 km) |
| Ontario to Little Chute (Wisconsin) | 1,709.27 mi (2,750.80 km) |
| Ontario to Little Elm (Texas) | 1,189.21 mi (1,913.85 km) |
| Ontario to Little Ferry (New Jersey) | 2,410.38 mi (3,879.13 km) |
| Ontario to Little Rock (Arkansas) | 1,436.73 mi (2,312.19 km) |
| Ontario to Littleton (Colorado) | 793.88 mi (1,277.62 km) |
| Ontario to Live Oak (California) | 319.25 mi (513.79 km) |
