Here's a link to my latest trip to the Cleveland area. (Dave you're gonna make me blush. )

http://www.lighthousekeepers.com/forums/ultimatebb.php?ubb=get_topic;f=15;t=001402

Here's some milage details by my mapping program-

Erie, PA is about 105 miles east of Cleveland.

Marblehead, OH is about 80 miles west of Cleveland.

Basically given the parameters you indicated you should be able to get to all of the lighthouses I got to in my travelouge.

In fact given enough time you could even take the ferry out to get an up close view of the lighthouses there. It would mean most of a day, though which is why we passed on it.

Go back to the sites Dave mentions as they are very good for directions and other information such as links to sites for the individual lighthouses and other sites for information as well.

I reccomend using a GPS of some sort as it is almost always extremely helpful- but bring the paper map as well.

Dennis