Wrote a review on this, here it is:
https://terrenceswiff.wordpress.com/2017/10/13/yurucamp
This manga was practically an instant favorite for me. It probably isn't obvious from a glance, but this series is incredibly special. Basically, as opposed to nearly all other "group of girls" slice of life series, this one is not, and is so much better for it. Of the series' two protagonist, one indeed joins a club, the other steadfastly refuses and spends most of the manga chilling on her own on quiet mountains and open roads.
It's GREAT. A total must read. Funny scenarios and interactions, beautiful and atmospheric scenery, and lovable characters.