A full trip on the trial is only about 12 miles and there are multiple places to join the trail. The original trail is a loop so you end up where you started. The spur is an out and back. Most of the trail is either paved or very tightly packed gravel.
One downside to this trail is that you have several street crossings... I'm not a fan of crossing roads but these aren't terribly busy so it's not too bad...