This loop varies from easy to fairly difficult. It starts out with a tame gravel road ride then when it hits singletrack can get steep and rocky with some gnarly downhills and sharp turns.
How to get there:
Take the I215 freeway to highway 74(florida ave)go stanford st and turn right. Follow until you come to crest drive and turn right.go to vista del valle and turn left. drive all the way up the hill until you come to simpson park. Follow park road until ranger station.