Yeah.I just looked at a map on Yahoo Travel and it's a good ways up 87.Do a Google search for Navarre+map.Second entry is the one you want.Hit that one and then zoom out till you can see I-10.You will be able to follow 87 as it turns north and runs straight for a few miles,turns left and then back to the right and then crosses the river.On the map you'll be able to see a point sticking out to the left that says Blackwater Bay.The trails go all the way to the water there.Enjoy!