The NPTC is an organization to which every serious National Park enthusiast should interface, or even consider joining. The club’s website states…
“The National Park Travelers Club (or NPTC) is a non-profit 501(c)7 social club organization whose mission is to provide networking and recognition opportunities for visitors to America's National Park System. This Club acts to support and expand appreciation of the U.S. National Park System.”
The 3000+ active members support each other in planning park visits, sharing trips, and discussing the current state of affairs of the NPS and Park System. An annual convention brings a couple hundred members together for a week of events and tours of the local host park units. As of 2022 there were about 20 members who had completed their journeys to the 423 parks, with many more expected in the next year or so.