California 4 Corners Route is a beautiful but challenging route just at the north of Golden Gate Recreation Area with starting and ending point at the intersection of Miller Ave and Montford Ave at Mill Valley, California.
The route starts with a long and pretty steep climb until reaches Panoramic Hwy, from there the route goes relatively easy and later all the way down to the Shoreline Hwy (California Route 1).
After making a left turn then you will ride along the beautiful Shoreline Hwy (California Route 1) until it meets the other end of Panoramic Hwy. Continue ride on Panoramic Hwy, when it reaches Sequoia Valley Road, make a right turn to Sequoia Valley Road. After that it is pretty much all downhill back to the starting point.
This is a difficult route as it has some long steep climbs, but the same time it is also a very rewarding route as it has stunning beautiful views along the route.
Want to have a quick view of the route? Check the video at Allerbi Youtube, enjoy!