Is this a healthy thing that I'm doing?

During school I lost weight I lost 13 pounds in my gym classes I got flag football 5th period and basketball 6 period and I walk alot with freinds.....now that I have a week and a half off I need fun activities to do if I'm not entertained or having fun I won't do it that's y it's inconvenient to sighn up for a gym like Bally total fitness and things like that.........any suggestions during school days I walk to school 6 blocks and back and sometimes I'm at the park running with freinds or walking in Fordham all of it (Fordham is a shopping area street and it's very big)