HI
I'm more of a plodder/jogger and I managed to do so until about 7 weeks before birth of 2nd baby. However, please please don't rush out to run after having your baby:
1. You will be exhausted once baby is in bed and really should be catching up on sleep!
2. Get lots of walking done in the day withe the pram.
3. Remember your pelvic floor. I ran about 8 weeks post baby and wet myself at the gym. Was really upsetting and reminded me that I needed to do things slowly.
4. Boobs (if breastfeeding) will be huge!! So get a big sports bra.
That said I started run/walk at about 6 wks and was ok but I really was not prepared for the pelvic floor situation. I had had a normal delivery (1st baby was c section) although had torn badly (not felt due to lovely epidural) and in all honesty it took about 4 months for things to feel normal down there. I'm trying not to be negative as it was imp for me to get back out there, have time on my own and lose weight but I put a lot of pressur eon myself when perhaps a hot bath woul dhave been better.
Don't underestimate the power of listening to your body. You will know in yourself when it's ready. It's 9 months on and I'm planning on a half in another 2 months and I'm proud about that.
Good luck and enjoy every moment of your newborn x x x