For those of you who don't visit TON(Texas Offroad Network), the local trail riding organization is having one of their family rides this coming weekend at Goertz Ranch southeast of Austin. It's usually on Sunday but they haven't posted a day yet as far as I can tell. Here's a link.
http://www.texasoffroad.net/forum/ubbthreads.php/topics/519032/1
http://www.texasoffroad.net/forum/ubbthreads.php/topics/519032/1