Portland has gone whole-hog with bikes, and Bend is famous for cycling.
I'm not into it, but I do enjoy the videos we get about how people are challenging the sport.
Here is an PBS episode of Oregon Field Guide about "free riding" on mountain biking in the nearby forests of Mt Hood. The biking segment starts at time 19:45 (
link) and is about 10 min long.
"It's as safe as you make it."
"Just don't ride over your head"
"You definitely don't want to break your bike... that's expensive"