Wallstreet Professional Review and Guide
"If you don’t mind returning on the same road you just rode up, try this pleasant out-and-back road tour of Fourmile Canyon. One of Boulder’s coolest climbs leads to the historic mining district of Wallstreet, and a shady resting spot. Six miles up Fourmile Canyon... magical.
The canyon of Fourmile Creek, which flows into Boulder Creek just a few miles above the city, is pleasantly lush at the bottom, and the grade pleasantly easy. Fourmile is much more forgiving than those canyons, however. Fourmile is a big-ring affair for Taylor Phinney, Tim Johnson, Jeremy Horgan-Kobelski, Heather Irmiger, and the rest of Boulder’s world-class racers (the list is long)."