Cyclists ride, motorcyclists eat. Roberts market in Woodside is a brief refueling point, however. To be more to the point, cyclists don't want to leave their bicycles unattended, and no serious rider brings a lock with them.
Konditori in the Ladera shopper is right on Alpine Rd in Portola Valley and has good coffee and bakery items. They also serve good sandwiches for lunch. Next door is Amigos grill where you can get good huevos rancheros.