I'm a long-distance running hoping to run throughout my pregnancy. I currently 6w5d and counting, and don't plan to stop running... [My doc is ok with it, as is all the data-- as exercise, even some "intense" exercise, is not proven to correlate with miscarriage.] I've got a half-marathon this weekend, and another when I will be about 13w.
Any tips from those further along in their pregnancy? Recommended gear/clothing? Any insights the community might have to share with me?
Re: Calling All Runners!
I didn't need a support band - I found them to be hot and uncomfortable. I was worried that running without a band might cause stretch marks, but this was not the case. Stretch marks are generally genetic, so I don't think running with or without a support belt would make a difference. I am tall, so my baby belly was not as pronounced as most pregnant women, which may be why I didn't find a support band to be necessary. A band might offer more comfort to someone with a belly that is more protruding.
One thing I did experience was a drastic decrease in speed. My pace for long runs decreased from 8 min/mi to 10 min/mi. I wore a HR monitor for a short while but found it caused more anxiety due to inability to keep my HR below 140. I later found out from my cardiologist that the HR below 140 rule is no longer advocated by the American College of OB/GYNS.
I think it's great you plan to run during your pregnancy. I realize that many cannot, due to fatigue, morning sickness and activity restrictions, and that is okay. I enjoyed running while pregnant with my first and, now that I am expecting my second, I am excited to run pregnant again, but this time with a jogging stroller!
GL on your upcoming races - so envious!
Beta #1 - 10dpo = 50
Beta #2 - 12dpo - 127
Beta #3 - 24dpo - 15,594!
Before I got pregnant I told my husband ya I'm going to run every day & be so healthy blah blah. As soon as I get home from work I'm on the couch & eating whatever doesn't make me want to vomit - which here recently has been carbs! Here's to feeling better 2nd trimester running possibly & not being a fatty anymore haha !
Also not a distance runner, but would get in 2-3 mile runs about three times a week before finding out in early October.
I haven't run since.
Exhaustion and nausea made running the last thing i wanted to do. And now that winter's coming, the threat of ice and falling is enough to keep me away. I could run on the treadmill, but I could also stab myself in the ear with a dull pencil which would be about as much fun. 
Looking forward to post delivery and getting back out on the road. I don't even want to think of what my pace will be.
My Ovulation Chart Simple Link: My Ovulation Chart
I ran up until 2 days before my son was born. In fact a ran a 5K literally 48 hours before he was born. He was born at 39 week, was 8lbs and I had a awesome labor. I completely attribute that to my consistent running. I am now 14 weeks with my second and still running. Not as much as I ran with my first because I have a 19 month old to chase after and a very demanding job, so the time isn't there. I have a half marathon in three weeks and one in February. Looking forward to both.
I had SPD with my first from about 22-28 weeks where I stopped running because I couldn't even walk, but then it went away.
It is completely personal, but I say KEEP RUNNING!
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I run about 35-40 miles a week, but unfortunately was stricken with hyperemesis gravidarum from 6 weeks to delivery my last pregnancy. Awful and I could not run.
I started running 2 weeks post delivery and worked my way back into running shape. It took about 4 months.