http://www.helium.com/knowledge/120671-guide-to-biking-and-walking-trails-along-american-river-northern-california.xml Helium.com > Biking > Guide to biking and walking trails along American River, Northern California en-us Copyright Helium.com Mon, 05 May 2008 19:39:55 GMT Mon, 05 May 2008 19:39:55 GMT