This trail is NOT just a horse trail, there's not a fee, and dogs are allowed so long as they are on a leash...just to set the record straight. It does close at times if flooding occurs in an effort to save the trails. We've hiked from Brockdale towards the East head and from Brockdale towards Highland. Both routes are very beautiful.
We didn't go far because the trail was too muddy. It rained the night before. I would like to finish this trail on a dryer day. As far as I can see though, this trail is a great trail to hike. Here's a map that I found later: http://www.trinitytrailriders.org/trinitytrail25mile.pdf and more info here: http://www.trinitytrailriders.org/
Ryan R. on Lake Lavon via Trinity Trail
Was surprised how fun this trail was. There was some small rolling hills, but nothing extreme. Me my wife and son hiked 18 miles of it and had a blast. Some real beautiful views of Lake Lavon. No bikes on trail so that was a plus. More horse back riders then hikers bt they were all very friendly. Lots of shade. See pictures! Highly recommend this trail for hikers or horse back riders.