This is hands down my favorite trail to walk my dogs on. The only drawback is that they get filthy from the creeks, lake, and gravel trail, but it is totally worth it. Canopy overhead makes summer walking tolerable. Trails zig zag and many hills keep it interesting.
There's a set of two different paths within the larger red, which I always tag right under 2.25 mi. So if you're feeling noncommittal, you have a lot of access points to shorten the workout. The trail is composed of crushed gravel, and being so removes any technical obstacles. However, making up for that, there's a good bit of elevation gain. I run this trail, but I take my kids here to hike.