FINALLY OPEN AGAIN!
On October 28, 2011 the US Park Service the ENTIRE Marin Headlands loop to bicycles.
To view the entire route along with Marin Headlands, see our Marin Headlands route here.
If you can’t wait to relive a descent down the backside of Hawk Hill, check out the video below!
WE LIKE TO BIKE 
Thanks for that awesome posting. It saved MUCH time 🙂
Your article perfectly shows what I needed to know, thanks!