You start at Tocci Ave in Monmouth Beach. (There is a park with a baseball field so often times on weekends there are baseball games. Depending on the time of day it can be difficult to get parking.) You use the launching ramp to put your kayak into the water and then you are off. You don't technically start in the Shrewsbury River. You start in Manhassett Creek, but you make a right when you launch and then go under a bridge. That's when you join up with the Shrewsbury River. From there the rest is up to you. The river eventually joins up with the Navesink River. You can paddle there, or if you're feeling more adventurous you can paddle out to the Sandy Hook Bay. There is a lot to explore and many photos you can take, so go ahead and get out there!