Well-maintained generally though sometimes the path is very muddy or cracked from heavy rainfall or snowmelt. We've walked nearly all the different sections with our dogs and have been using the trail regularly for running. Beautiful views and lots of wildlife. We've seen hawks, magpies, bald eagles, prairie dogs, and even a random coyote or two! The only downside is the lack of shade--wear a hat and lots of sunscreen!
A decent flat winding course that does not really offer too much difficulty. This is a huge trail that runs all the way up, down, and around Westminster parts of it are fun other parts to seem like a freeway to get to wherever you're going. If you are biking you can really get around this area very quickly there are lots of water to go over and overall it is very pleasant with lots of parks and stops all along the way.