Shaw Park is a 2.4 mile loop trail located near St Louis, MO. The trail is good for all skill levels and primarily used for walking.
Fine for running/walking, but the loop is a little odd. It's nice to have some place in Clayton where I live to run in the park if needed, but it disconnects and it's short. It does link up to another city trail (greenway?), but then you have to cross the street to get very far on that one.