Park outside of Rico and pedal up the road for about one mile. Head up Scotch Creek - Forest Road 580 until you come upon the Colorado Trail. Turn right (south) and enjoy a cross country style segment with rolling ups and downs for many miles.
Just before the 14-mile mark, look for FS Road 564.B and Salt Creek Trail #733. This trail has a gentle beginning then gets progressively steeper until you kick out on to Highway 145, to head back to your car.