.75 mile trail. Connects MO Research Park to the Katy Trail. It is an asphalt trail in a heavily wooded environment. Great Rivers Greenway Great Rivers Greenway partnered with the University of Missouri to develop the trail. Great Rivers Greenway is currently planning a trail extension through Busch Wildlife to connect to the Dardenne Greenway at BaratHaven Trail. ds and wetlands. Planning for connecting this trail to the Dardenne Greenway at BaratHaven has begun.by greatrivers