Is 2 miles long enought to start?!

Is 2 miles long enought to start?

I havent exercied in over a year! I went to put on my summer clothes from last year and they didnt fit so I decied to start exercising again! I started walking 2 miles. I could have went farther but I know i will feel it tommorrow. So my question is is 2 miles enough to start out and how ofter should i up my distance? I would like to loose 2 lbs a week!
thanks in advance!

2 weeks ago
Running would be nice but I tore my acl about 2 years ago and my doctor dosent reccomed running because I have a rubber knee cap!

It is important that you start at whatever is comfortable for you. You don't want to risk injury, or overexertion, both of which will prevent you from adhering to any exercise routine. There are some people who have started walking/jogging at a 1/4 mile (or less) and have succeeded in maintaining a regular/ healthy exercise regimen. If 2 miles is comfortable, do it for a few sessions and then just increase your distance to where you feel the balance between competence/comfort and pushing it to the next level. If this is a lifestyle change, don't be so concerned with distance, just keep at it and you'll see that you'll be amazed by your progress. Some of my best runs and times have been when I turned my mind off of the distance or stopwatch (I'll have a friend time me sometimes).