Devastated by numerous wildfires in the past ten years, the Buffalo Creek / Pine Valley Ranch Park area and its many miles of intersecting trails are a blazing delight (ahem!) to mountain bikers of all skill levels.  Located in the South Platte River valley 5.7 miles south of Pine Junction on Jeffco Hwy 126, the Park offers a wonderful collection of trails that can be woven together in endless configurations to keep you happily in the saddle for hours on end.  The trails are moderately demanding, with lots of rolling terrain.  There are few technical challenges, but the elevation gain of about 2600 feet and the overall altitude appeal to serious riders.  Several trails on the south side of the park connect with the Colorado Trail in the Buffalo Creek drainage.
For the official website, please click here.  For an online PDF map and brochure of the bike trails in the area, click here.