I agree with the others who say work your running in around your family.
I get the kids up and ready for school. In addition, I drive them there on my way to work. At night, my wife cooks while I do the dishes. I then help with the homework while my wife grades papers from her teaching job.
Try to work your running in around the kids' activities. I run while my kids are at soccer practice. That beats sitting around at a practice and then running later.
I often run at 5:30 a.m., and I'll throw in a 2nd run at lunch or during the kids' soccer practice. I prefer the morning time because there's less chance of losing a run to life events.
The person who suggested "mowing the carpet" more often is flat wrong. If you don't help out around the house, don't count on getting the goodies. I can promise you that the more active I am around the house, the more active she is in the bedroom.
I learned that you can make all of this work a long time ago. My wife was pregnant with the 2nd child while the first was 2 years old. My wife was put on bedrest, so I had to do everything. That meant getting up at 6 a.m., getting breakfast for everyone, getting the 2-year-old ready to go to daycare, and driving him there. I also made sure my wife had everything she needed, such as lunch, so that she didn't have to get up during the day.
After work, I picked up the 2-year-old, cooked dinner for everyone, did the dishes, did the laundry and cleaning, played with the little one, bathed him, and put him to bed. After spending some time with my wife and getting her settled down for the night, I would go for a run. I was putting in 11 miles/day, and I often didn't start until 10 p.m. After running, showering, and unwinding, I would go to bed about midnight. The whole routine would begin anew the next day.
It's all about priorities.