Recommendations for 30 mile run course

I have been planning a long training run this Friday, looking forward to a 31 mile loop in Conroe area- "Grand Loop" of the Lone Star Hiking Trail. I'm becoming squeezed for time, now looking for options involving less of a drive.

I live on the West side, currently exploring routes through the Addicks and Barker reservoirs, or maybe heading in to town from Braes bayou trail then up to Buffalo bayou. Off road trails are ideal, but ultimately looking for routes with minimal vehicle traffic where I can zone out for a few hours.

Just checking if anyone has ideas or past experiences? A loop that starts and ends at front door would be convenient, but I'm open to driving a bit, or even ubering home from a line path. I do require drinking water, whether fountains or purchasing from stores along the route. I've taken the day off work and look forward to the misery, just want to make the most of it. Thanks in advance!