So as long as I can remember, whenever I run for any extended period of time/distance, I get pains all over my midsection. From my abs to my back, side to side. If I’m running far enough, I’ll eventually run through it, but its a pain reason why I can never max my 2-mile run because I get slowed to a crawl when it hits. The circumstances are never similar; I always stretch and warmup properly. I’ve been to a doctor, but they were no help.

Anyone have any ideas on what is causing this and/or how to stop it? Please and thank you.

You mean like side - stich? right under the ribs?

Sometimes right under the ribs. but its not limited to right there.

Have you tried exhaling when the left foot strikes? That little tip was particularly revelatory for me when I heard it a few years back; it all but eliminated my own running cramps. These days I only really cramp up if my breathing gets erratic, or if I haven’t eaten properly before a running WOD.

This thread seems to have some good information in it, including the reasoning behind the left-foot thing: http://board.crossfit.com/showthread.php?t=2610

Have you found a relief yet?

My suggestion would be to make sure you’re torso is lined up on your hips correctly so you’re not over-using your core to keep yourself straight and stable. I would suggest going to http://www.therunningbarefoot.com if for no other reason than to browse through and see if anything sticks out that might help.

Good luck! :D