American Volkssport Association -
http://www.ava.org
The AVA's network of 350 walking clubs organize more than 3000 walking events per year in all 50 states, as well as occasional bikes, skis, and swims.
All events are open to the public
A volksmarch is a non-competitive 6 mile (10 kilometer) walk. It's not a pledge walk, it's not a race, it is a fun activity you do with a club, with your family, with your pet, or all by yourself. Volksmarching got its name from its origins in Europe.
I used to participate in these walks. When I took a vacation to Hawaii, I was able to do what is called a "year-round" walk.