Hathaway Park has a playground, ball field, boat launch, and rough trail along the river.  You can take a stroll through the park, or you can take a more challenging walk up the river.  When I reached the bend in the river, I realized I had been there before, because I had previously come down river along the trail from the Schmid Family Park.  This means there is a more or less walk able trail for roughly half a mile.