I'm probably joggin at 4.5-5 mph. My knees are feeling it a little. If I lose a few pounds (15) that will lighten the load on the knees. Today I went to the Edward Forsthye Refuge (Federal) in Absecon, NJ. There is an 8 mile drive that goes out into the marshlands. It's an 8 mile packed-sand road. I rode my bike - beautiful ride. Stopped a few times to observe the bird life; Great Blue Herons, Egrets, Ducks, Ospreys, and other small shore birds. In distance is the skyline of Atlantic City. I'm feeling good.