Nice little set of trails near Boise. Try biking the back trails in the summer (stay off the interpretive trails). You can access them from anywhere - 8th street, Rocky Canyon, Bogus Basin, the ridge road and make the trip as long as you want.
"So I was sitting in my cubicle today, and I realized, ever since I started working, every single day of my life has been worse than the day before it. So that means that every single day that you see me, that's on the worst day of my life."
--Peter Gibbons (Office Space)