I set a personal best today-25 miles at 22 MPH average. All flat at sea level and just a slight NE breeze. It was great! I'm 74 and have never done this at any age prior. My old record was 25 miles at 20.8 MPH which stood for a very long time. I seriously didn't think I would ever beat it. When I saw that I was on track to beat myself, I just pushed harder. I nearly passed out in my driveway. Neighbor came running over when they saw me lying on the driveway. It was all good-Hooraw!