Where and when to walk

At the time I started all this, it was still really cold here (we had a crazy way below average winter). And this southern girl so not like the cold! So I started out in the exercise gym at my work on the treadmill. I would go for about 30 minutes at the end of the work day before leaving to pick up the girls. I knew afternoons would be better (even though all I wanted to do was go home) because I am soooo not a morning person (ask anyone who knows me).