I started out with 7 miles. Ride 6 days a week and mondays off. Weighed 255 and in a months time adding a 2-3 miles per ride each week got it up to 25 miles on a mtb in a month and 30 or so on a road bike. weight is down to 244. Looking for 200 lbs and I would be pretty thin. I gave up sweets and added some HIIT training and I'm getting fitter, resting heart rate in the high 50s now and looking to improve. I'm 60 btw.