As always with questions like this, the best advice is to ask your doctor.
A couple of years ago, a woman gave birth several hours after completing the Chicago Marathon. She completed it at a 15 minutes pace, essentially a very brisk walk. But ... she was a runner before her pregnancy. She had run several marathons and cleared it with her doctor first. Her advice was that she should continue her normal activity for as long as she was comfortable.
But (1) she checked with her doctor and (2) she was already an accomplished marathoner.
And seriously, it is always a good idea to check with your doctor even if you weren't pregnant.
Start by doing what is necessary, then do what is possible and suddenly you will be doing the impossible -- St Francis of Assisi
While many women run right through their pregnancies without any problems, it really outside the scope of advice for any of our members and experts to advise as to whether you can run or not. The first person you should ask is as he/she is in the best position to base his/her finding on your medical evaluations.
I don't know the answers; but, do you know about Spark's sister site called BabyFit.com? It is specifically for new and expectant mothers. I suggest you create an account there (it's another great free site by SparkPeople) and check it out. Here is just one article that I found there that is specifically on your topic:
I would suggest that normal activity is fine, running for health and enjoyment and relaxation, but not competitive running. So if your normal activity includes a couple of miles of running I would do that at an easy, relaxing pace. I would also run in as natural a way as possible, barefoot or in minimalist shoes, because this will lessen the impact of your running on you body to what it was designed to do even when carrying a baby. Your hip joints change a little as the baby is growing and moving things around so being gentle with them is a good thing more for you than for the baby who is well-padded. When you start feeling too front-heavy to run you can easily switch to uphill walking to maintain your fitness level.
I've been AWOL a few months, but I've been steadily plugging along and maintaining my base of 2-3x's a week, 2-3 miles a time, with the initial plan of 2-3 half marathons this year (I only ran 1 last year, and 2 in 2011). But, as the title of my post indicates, I am pregnant (w/embryo #1!!) and I have NO CLUE as to how this going to affect my training.
Has anyone else competed half marathons while pregnant? How is this going to affect training? I know that my resting heart rate is higher, and I shouldn't do excessive intense training, but does anyone have some advice/good resources?
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