20 minutes north of Garner SP is Lost Maples SP. The trails are better, the views are better and the trees are better. And, unless it's fall, it is much less crowed. However, if you're looking to go swimming, stay with Garner. My husband and I went hiking at Garner last weekend (3/19/11) and were horribly disappointed. The trails are pretty bad, the crowds were loud and there was litter/graffiti all over the park. Even after an hour of hiking we could hear the obnoxious music of the pavillion. The trails were crowded with people who could not read hiking maps, were ill equiped for trails made entirely of loose rock, and did not seem to be enjoying nature at all. Go to Garner SP to enjoy the river and the "party atmosphere", but not to enjoy quality hiking.
"This book will be in great demand by travelers, park visitors, and aficionados of Texas landscapes."