Riding by yourself but being social on the chairlifts is probably the easiest way to meet the biggest variety of people.
A few weeks back I talked to a guy who was a Phd Analytical Chemist for Proctor and Gamble. He had a sick touring setup that I asked him about and he goes on to tell me him an his ski buddies have taken trips all over world, including heli ski trips and a 14 day backpacking trip from hut to hut in the Alps. I did a few runs with the guy, he ripped for being nearly 50.
The same day I also met a nice guy who asked me what I was studying in school. I told him aeronautical engineering and he exclaims 'Oh sweet that's what I do for GE aviation!' So then I asked him if he was based at the HQ in Cincinnati and he goes 'Yeah, as a matter of fact, you aren't looking for an internship this summer, are you?' Unfortunately I have other plans for this summer, but it's still pretty dope to say I was pretty much offered an internship on the chairlift, especially to a company like GE