I'm definitely in the same place. After 2.5 years in Denver I'm finally making running "friends" - we go out for breakfast on Saturday's after our group run, but I don't hang out with (or communicate with) any of them outside of running. My hiking group (from meetup) is the same, and yoga, and pilates...etc. We are friendly at what we do but everyone has their own lives. So I do lots of things to keep me around people but I have no one I can just call to say "Hey, lets meet for XYZ!"

And I really miss just randomly running into people I know around town. Denver is just too big for that to happen, even if I knew more people here.