right now website pulls full park results
then filters on the client(browser)
server side should support passing in long/lat & distance & only give back results in the distance
other solution would be to only request the parks once (don't store to local membory just a global json object) and use this each time for filtering & call the rest api only once per page refresh.
Parks don't change very often.
Less hits to server also faster b/c just refilting what's already on the browser.