Distance from Lake Helen, FL to Key West, FL is 419Miles or 675 Km. You can get this distance about 7 hours 21 mins. If you want to planning travel with plane for 0 Miles or 0 Km, You can get this distance about 30 mins .
A car with an average MPG will needs 19.4 gallons of gas to get the route between these points.
The estimated cost of gas to get between Lake Helen, FL and Key West, FL is $44.04.
During the route, an average car will release 380.08 pounds of CO2 to the atmosphere. Your carbon footprint is 0.91 pounds of CO2 per mile.