Lubell Park, hidden gem in west Tulsa, has about three miles of interesting trailz that will satisfy your midweek trail running needs.
I found this park while geocaching, and have been back twice since then to explore what's there. While the park is only 16 acres, the trail area is about a half mile wide swatch extending from 53rd St all the way to 61st. The map below will get you to the park. I could not find a trail map.
I think I am correct in saying that these trailz were built and are maintained by a boy scout troop. There is a designated wetland area, a wooden overlook (not sure what it overlooks) and a gazebo in the park proper, Further south there are jeep roads and are quite hilly. Run on every trail and jeep road, and you'll have three miles before you get back to your car.