Rancho Cucamonga is noted for having many bike trails the best known is The Pacific Electric Trail it runs East to West and is highly used. Lately I have noticed work to add more bike trails most of these trails follows the wash infrastructure, The wash carries rain water away from the mountains and goes North to South down hill or up hill depending on your direction you are riding your bike or walking sadly crossing major streets could be a problem not addressed yet on these new bike trails. I have added Geocaching to the bike trails come out and enjoy the walk or bike ride at this time there is not many people using the new trails.