Moving Comfort makes the Fiona style bra. The straps are adjusted with velcro and can release for easy nursing. They are rated "high-impact" so should be good for running. I just got my new sports bras last night and put one on this morning. I'll let you know how the workout goes!
Also! I've been using MyFitnessPal.com for tracking calories and whatnot. I'm 3lbs away from pre-pg weight. I started using it at 5 or 6wks pp and I'm 14wks pp now. So YAY!
Re: PSA for Nursing Moms - Sports Bras!