I do it for fun and rec but not a major hobby. Have a g fisher 29er. Some of the guys I work with are hardcore into biking... They did white rim in Moab last Saturday in a single day. 106 miles, fuck that.... This is a kinda normal thing for them. They regularly do street rides over 100 miles up here also and when I say regularly I mean like 4 days a week in summer..... One does 80 miles round trip just as his work commute daily.
These dudes are fucking nuts about cycling up here.