recreationist

[ rek-ree-ey-shuh-nist ]
/ ˌrɛk riˈeɪ ʃə nɪst /

noun

a person who advocates that national parks, seashores, lakes, etc., be preserved in their natural state for recreation, farming, or scientific study.
a person who frequently enjoys outdoor recreation, as camping and hiking.

Origin of recreationist

First recorded in 1900–05; recreation + -ist