The recent launch of the Strava Global Heatmap has unleashed a storm of revelations about secret military bases and digital security and privacy concerns of US military personnel. In Detroit the story is mostly the same as it always has been: no one is (EDIT 01/30/18) not many people are running in neighborhoods outside of Downtown or the 7.2 square miles of “Greater Downtown.” Running redlining?
Grandmont-Rosedale jumped out at me as well as Hamtramck as their own insulated running districts of Detroit. However, I was quite surprised to find the secret lives of auto industry workplace wellness champions!
The Jefferson Assembly Plant really stood out as the only Eastside highlight. The GM Hamtramck Assembly Plant didn’t highlight as it appears more people prefer to run around the plant than actually at the plant.
Someone is taking regular jogs around the parking lot at the American Axle World Headquarters.
Detroit Diesel also has a well worn path around its outer bounds.
Similarly, the lots outside the Dearborn Truck Plant (DTP) at the Ford Rouge Plant seem to be getting regular use as a running loop.
DETROITography 
Seems about 75% or more of the people I see going for a walk outside where I live in the suburbs, are walking their dog. It seems kids don’t even walk to school that much anymore.
Rarely see people running, although I don’t run at all times of the day and certain times I rarely run. Not sure if treadmills are a reason…I find t.m.’s fairly boring.
Also, the sidewalks are not in ideal conditions in some areas in Detroit. Various type of debris, dirt and not and/or not in great shape, to varying degrees. Tracking a run is more of a luxury for many people of course.