This is a nice run in the Northside neighborhood, combining the Mill Creek Greenway and the bucolic Spring Grove Cemetery. The Greenway runs for 2 miles, from Ludlow Ave. to the Cemetery. Spring Grove is a sprawling 1840s cemetery, with an arboretum in gothic revival style. One can put together several miles in here — it’s about 1.5 miles from one end to the other. It is permissible (and popular!) to run in the cemetery. The southern half is a bit hilly.
Add-On: Just south, lovely running in the Clifton neighborhood. Use Clifton Ave. to cross over I-75 (a not attractive section), then Lafayette Ave. to Mt. Storm Park. Can also explore the Northside neighborhood roads.