One day back in 2011 I stopped by the Valmont Bike Park in Boulder to snap some photos.
I have never tried a courses like this one personally. The park caters to all rider abilities with easy through difficult routes down the hill.

I don't really ride anymore , but I thoroughly enjoyed taking pictures of these anonymous riders.

Links

Back in my college years I used to race bikes for Texas A&M. I later dabbled with mountain bike racing but mostly rode single-track just for the fun of it after my road racing days were finished.

I'll never forget arriving in Boulder from Dallas where I had lived and trained. Dallas was pretty flat, and very close to sea level, but I rode a lot and trained hard.

I went for a ride around town on my mountain bike only to get smoked on a neighborhood street by some girl on a cruiser bike.

"Ring Ring!"

She even cheerfully rang her bell as she passed me on steep hill near downtown. As if to say "Welcome to Boulder (where no matter what sport you pick, there will be at least one pro athlete or even just a 'local' to put you back in your place and crush your soul. )"