Quote Originally Posted by Mike T View Post
There are tables where you can put in your times for various distances and it will give you an estimate of your VO2 max, assuming average efficiency. In my late 40s these said my VO2 max was 50-ish; I have not run a formal flat distance for years, but by Garmin tells me it is now 42.

PS: I have added a photo to counter the "scrawny" label - for some reason it can only be seen on my profile.
Yes, that's more "lean but ripped". I'm more along the lines of: http://2.bp.blogspot.com/_ETJh0qPLkx...00/scrawny.jpg