Anonymous wrote:This is a little off topic, but I am a new runner (40) and am trying to figure out how much and how often to run. I get a little obsessive about things, and my intention was to run 3-4 times a week, just a couple of miles to make sure I don't get an injury - I have achilles problems. But now a couple miles a few times a week doesn't seem like enough. What's reasonable? How far do people usually go? I am never going to be a good runner, but I just don't know what is typical for a recreational run-for-your-health person in terms of milage...
I agree with PP that it depends what your goals are! When I first began running my goal was a 5K, so I was running 3 times/wk to work my way up to the 5K. My next goal was a faster 5K, so I was running between 2-4 miles at a time (3-4 runs/wk) with a faster pace on the short runs. After that I began doing a slow 5 miles some Saturdays and found that I liked the longer runs better than short, fast ones, so I started training for a 10K, and after that eventually worked my way up to about 20 miles/wk with an 8 mile run on Saturdays. Now, just getting back to running 8 months postpartum, my goal is really just to get my ass out the door and running, period.

I'm aiming for 2 miles 3-4 times/wk to start.
If your goal is recreation and general health, you've got those things covered if you're doing about 150 minutes of moderate exercise each week. Anything beyond that can be whatever you want it to be!