I weigh 370 pounds I just walked one mile in 29 minutes is that good

From a medical standpoint, I would have to say please take it slow because of cardiovascular problems. You must have taxed your heart and I suggest next time you do this, take the appropriate monitors with you so you know for sure that you are not over doing your vital organs. I think its great that you are even attempting this, have the motivation to walk that far at your present weight, but please talk to your doctor about your present ambitions.

I know I didn't answer your immediate question, I have no present guidelines to determine the answer.

The fact that you can even walk a mile is great, but have you checked with your doctor as to how much you should be doing if this is a start. Did you start by walking lesser distance and work up to this ?

But it is walking a mile, and just make sure you are ready and then keep it up and build it up

I started walking on treadmill on Sunday I was first walking aq half mile in the morning and a half mile at night today was the first time I walked a whole mile at one time

On an older thread on this site, in reply to someone who asked a similar question:

A typical walking speed is 3 M per hour. So the time to walk one Mile is 1/3 hour, or 20 minutes.

However, at 252 Pounds and at 57 years, the typical speed is reduced by at least 30%, so from 3 M to 2 M per hour. So the time to walk one Mile at that speed becomes now around 30 minutes.

I weigh 375 I last year I was running a mile and a half a day. I had zero problems except for being fat. The more I ran the more I ate didn't lose much weight. Being fat doesn't mean you can get around, that is a myth about fat people. I am an atheletic fatty. I can run play basketball and work all day I just happen to be fat. Walk all you want.