Go to this website........it lists ALL riding areas and tracks in TX and a few other places too! It has directions, phone numbers, operation times and even arial shots of the riding areas on some!!
there is a place in bastrop,tx called the tahitian village. if you go past the golf course it opens up into a large plot of land, free riding, not sure how much land there is.
And for Chicken Hawk located in McKinney, Skull Creek MX is located just up the street (that's Texas talk for about 30 miles) in Bailey, northeast of you. Check out the website.
there is a place in bastrop,tx called the tahitian village. if you go past the golf course it opens up into a large plot of land, free riding, not sure how much land there is.