Wondering if you've seen this web page for Newcastle beer (just found it today...and it's making me thirsty for some cold Newcastle or Burn Victim) http://newcastlebrown.com/#/the_rooftop
You might be able to figure it out from this.... http://www.singletracks.com/bike-trails/gridley.html
thanks for the info, but i will be riding in SB then. i have heard of this ride, you think its possible to figure out solo? any info appreciated. thanks.