Open Space or Dog Friendly Trail in NoCo?

Hello, I just moved to the northern Colorado area (Ft. Collins/Greeley/Loveland) and was wondering if anyone knew of a nice open space or dog-friendly trail I could take my two golden retrievers to?  They are very friendly dogs and stay close to me so I'm used to taking them for walks off-leash, but I have to admit I'm not real impressed with the so-called "dog parks" up here so far.  Thanks in advance for your help!

Most of the state parks in

Most of the state parks in Colorado allow for on-leash dogs, but I haven't heard of any that are off leash. All the parks at http://parks.state.co.us/parksquickfind state that dogs need to be on a 6 foot leash. On this page, http://fcgov.com/naturalareas/faqs.php there is mention of a few places that may be off leash areas. Let us know if you find a great place and we can add it to the maps here.