First time for me was about 4 years ago, and I ran my first marathon shortly after starting (6 mos) of intensive crossfit, without even really training for it a

First time for me was about 4 years ago, and I ran my first marathon shortly after starting (6 mos) of intensive crossfit, without even really training for it at all. TBH my commitment level varies but when I am committed to getting in serious shape, it's now my go to thing. I agree that you definitely need to be really careful / mindful about avoiding injuries.