It's early to be thinking about summer 2019, but the Naked European Walking Tour gets arranged well ahead of time. Registration is already open! I went on the NEWT2017 trip and I highly recommend it; three of us from the New England area are already signed up for next year. It's always in Austria, but never the same exact place, though it's certain to be somewhere with good hiking opportunities. You will be required to get yourself to the nearest railroad station, where you might get picked up by other participants with cars, or you'll be informed about local buses. Note how inexpensive this is--once you get to the location, it's just 210 euros for everything. Languages in the group are mostly English, French and German.
To see what it's like, look at the Naked European Walking Tour 2017 thread in "Trip Reports":
http://freerangenaturism.com/forum/index.php?topic=1000.0[From the leader]
Hiking trip organized in Austria during the summer of 2019 from Saturday 13 July 16h00 to Saturday 20 July 10h00- thanks to the initiative of Richard Foley who created this gathering over 10 years ago. The accommodation is in a chalet in rooms from 4 to 6 people.
The principle of the group is a multi national composition (eleven different countries in 2017) and family (men, women and children). The hikes are adapted according to the level of the participants. Everyone participates in the life of the group (collective cooking etc.)
The price charged to each participant makes it possible to pay for the hiring of the chalet and the purchases of foodstuffs, hotel taxes, beer and wine: 210 euros for the week.
Information and requests to participate: contact
inac.natfree@gmail.com
PS places are limited depending on accommodation capacity.