We used to play in our back parking lot since during the day there isn't anyone coming or going. We had to switch to the big open field across the street since the girls would run in different directions and it was hard to chose who was in the most danger. So today we went across the street and I let them run free. It was still hard to chase after them both but at least no one was in danger while I was running after the other. Here is a picture of them running in opposite directions.