How long should you run on a treadmill to get a noticeble weight loss?
You should run 60 to 90 minutes on a treadmill in order to get a noticeable weight loss. Note that this will also depend on your current exercise program and how fit you are. You must also use it regularly to get effective results. Visit http://www.livestrong.com/article/384327-can-you-lose-weight-using-a-treadmill/ for more details.
You have to run regularly and frequently. I'd say 20-30 minutes a day.
Everyone is different but 30 minutes is a recommended minimum
I would say about 30 mins to an hour, but diet is also very important.