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 stomach ache after long runs

Vancouver, BC
Joined: 23 Dec 2004
Posts: 4

stomach ache after long runs Posted: Thu Dec 23, 2004 9:55 pm 

good question needs good answer:
after long runs (usually more than an hour and a half) i get these horrible abdominal pains/crampy style (very uncomfortable) that sometimes last the whole night. i've tried eating less, eating more, drinking less, drinking more, eating sodium, eating potassium... nothing seems to work- although i will say i haven't tried any over the counter anti-stomach pain meds yet... i was kind of hoping for some strategy that doesn't involve the pink stuff or immodium or something equivalent.
thanks for the replies! cheers


South Orange, New Jersey
Joined: 19 Dec 2004
Posts: 367

Re: stomach ache after long runs Posted: Thu Dec 23, 2004 10:35 pm 

Is the pain comming from your stomach/diaphram or you digestive tract? Do you have these pains during your run or just sometime after your run? Is the area tender to the touch. Do you ever feel this way when you haven't bee running?

My first thought is that you are irritating something from the constant motion/jostling during a long run. Do you wear a fuel belt of any kind during your long run? How's your core strength? Perhaps if you worked on strengthening/tightening your abdominal muscles it would solve this problem?

My second thought is that you may have IBS (Irritable Bowel Syndrom). Do a search on the Internet on this and see if any of the provided information relates to your experience. If so, you should speak to your doctor.

Runworks 2005 5M Racer
San Francisco, CA
Joined: 26 Nov 2004
Posts: 1157

Re: stomach ache after long runs Posted: Fri Dec 24, 2004 11:35 am 

[I moved this topic into the training forum]

Mfox asks some good questions. I think you need to try to narrow down the type of pain a little more. A stomach ache is a different animal from a cramp. Sorry I don't have much more helpful advice to offer... all the cramp type pain I've ever experienced went away fairly quickly when I stopped moving.


Vancouver, BC
Joined: 23 Dec 2004
Posts: 4

Re: stomach ache after long runs Posted: Fri Dec 24, 2004 10:23 pm 

i've read some on IBS and i don't think that's my problem... I don't wear anything around my waste and heat will often reduce the pain or eliminate it (I found this site while using my laptop as a heat pad after my run yesterday, heh!) The pain doesn't increase with palpation and it doesn't seem to be to any specific area- so all i can say is generalized, lower abdominal pain (?). If it is from my diaphram is there something that I can do during running to decrease post-run-pain? i've also heard that hypokalemia & hyponatremia can cause abdominal pain... frustrating none the less... =/


South Orange, New Jersey
Joined: 19 Dec 2004
Posts: 367

Re: stomach ache after long runs Posted: Sat Dec 25, 2004 7:45 pm 

The best way to rule out hyponatremia is to drink an energy drink with electrolytes, carbohydrates, and protein. Don't drink just water. I prefer Accelerade on long runs. I've also tried Gu2Go which was okay. I've found that Gatorade just donsn't do the trick for long runs with me. It has electrolytes but that's about it. Though the Gatorade company has recently come out with a new product to compete with the likes of Accelerade and Gu2Go but I haven't had a chance to try it yet.

Though Hypokalema delas with Potassum deficiency it can also be caused by reasons other than intense exercise. I've not read about any cases of hypokalemia related to long distance running. I think diagnosis has to be done from medical tests. But as for hyponatremia, as long as you consume adequate amounts of a sports/energy drink rather than just plain water during your long runs, you may be able to rule this out as the cause.

How about your diet? Or at least, give some thought to what you're eating before you go on your long run. Perhaps something isn't "sitting right" with you. Could it be gas? If so, then you definitely should evaluate your diet.

Where in your long run does it start to bother you? I don't know of anything you can do about your diaphram during your run but perhaps your running form is changing as you get tired. If it is diaphram related then perhaps if you try belly breathing it might have an effect. I ready somewhere that for "side aches" you should concentrate on belly breathing to reduce or eliminate the discomfort. I felt some stomach discomfort for the first time during my last marathon and belly breathing made it go away. The idea is to allow your belly to rise and fall as your breather rather than you chest. Focus on breating deep into your lungs such that it causes your belly to rise and not your chest so much. This is good general advice about breathing when running any time. Greater oxygen exchange takes place deeper in your lungs more so than in your upper chest area.

Hope some of this provides ideas you haven't alrleady tried and you'll find a solution soon.

Runworks 2005 5M Racer
Rochester, NY
Joined: 28 Nov 2004
Posts: 262

Re: stomach ache after long runs Posted: Mon Dec 27, 2004 2:21 pm 

Re core strength, I'd been having what was clearly a muscular pain after fast runs kind of where the thigh blends into the abdomen, but more to the side than what I'd call the groin area. In my case, always on the right. Crunches after every workout seem to be helping eliminate that discomfort. Might be unrelated to your problem, but you never know!


Joined: 08 Sep 2009
Posts: 1

Re: stomach ache after long runs Posted: Tue Sep 08, 2009 5:50 pm 

HI, did you get any help with the stomach ache after long runs? Am having the same problem and its putting me real down. please if you have any information let me know Thanks.


Joined: 02 Mar 2010
Posts: 1

stomach pain after running Posted: Tue Mar 02, 2010 3:18 am 

What area do you feel stomach pain in after your running?

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