See if you can find this Krebs Cycle map. http://www.krebscycleproducts.com/T2.html

I haven't ridden that particular stretch, but I've ridden in the area. The map recommends Hwy 68, takes you pretty much straight from Salinas to Seaside, about 20 miles. You could also take Reservation Road from Salinas to Marina, and then the bike path back to Monterey.

I hope you are going to ride the Big Sur coast, that's the best part!

Anna