Solo weekend getaway ideas

I’m taking a long weekend, solo, because I desperately need a break from work. I’m researching some places, maybe Austin/San Antonio/Hill Country, to disconnect for the weekend. I love hiking, and being in nature in general. It’s not often that I get the opportunity to break away, so I’m being selective in where I travel to. Any recommendations about areas to stay in/check out? I’d like to keep it within a 4 hour radius. Thanks in advance