Here's a thought for a fundraiser for the Hostel Detroit.
It's about 115 miles. Doable in 24 hours I think, but I'd rather do it in two days. Camp over night somewhere in Canada along the lake, enjoy the scenery and the welcome escape from civilization. I dunno. This is just one of several ideas I'm thinking about. As far as I know, no one has circumnavigated Lake St. Clair on foot.