Back in 2011, I did the Anchor House ride (see my huge long post about it). It's 500 miles over a week. I remember by Friday, my sixth day of riding, I was just exhausted; I remember that a rider was killed on the last day. Seven days was too long for me.
It's even worse too long for me now. But I found this ride, and it has me intrigued:
The Harbor House Ride for New Beginnings is a three-day, under-200-mile loop around NJ. It's also a supported ride (like Anchor House), and they look like they know what they're doing. I might wanna.
Check out the site. You interested?