I've done Devil's Back-bone to Horsetooth/Lorry and back. This ends up being a 35ish mile ride, and it happens to be one of my favorites. A Ft. Collins native recently told me there is a way to make this ride even longer by adding a third trail system (or dirt roads, maybe?) to make it a 60+ mile ride. Unfortunately I can't recall the route he described (post-race over beers). Anyone care to spill the beans on what the route might be? TIA.