Steve, you can find the detailed map at http://www.monmouthcountyparks.com/p...nry_hudson.asp
The start towards Freehold is very close to the Keyport one. Btw, on the road to Freehold, there's a 2-mi stretch on the road, but it has a wide shoulder.
I'd love to come but I'll be on vacation. Neilfein was interested I think, but didn't have time to go with him yet. I prefer weekday rides... if anybody wants to do the Henry Hudson or Sandy Hook on a weekday, beginning next week, let me know.