The blue trails in Cameron Preserve are a bit confusing. They're all labeled with the same blue diamond, yet there are multiple trails. Some of the maps at the area kiosks show all of these trails, some show only some of them, and some don't show any of them at all. Maybe these are ghost trails!
Maybe they're all grouped together as the Blue Cameron trails because they all ride about the same. You'll encounter lots of palm tree roots, lots of palm fronds sticking out into the trail, and lots of stretches of sandy trail. It's fun, and adds a new way to cross Cameron Preserve, as well as providing loop and alternate route options.