23.5 miles including some pretty decent hill-work; average speed 15.9 mph. My furthest and fastest to date; pretty pleased. Legs still feel darned good, only issue was my rear getting sort of uncomfortable towards the end...not sure how much further I would have been able to go. Other than when I first started riding, its the first time that's happened. Unsure whether its a seat issue, or just that I need more higher mileage rides to get inured to it. Typically I've been doing 18 miles or so.