My wife and I took the Tandem with trailer out for a spin today and tried the Iron Horse path in Kettering off of Rahn and found that you can now ride past Iron Horse park but will find that the pavement ended at the base of I-675. You will find that path slightly down hill with canopy all the way to the base of I-675 and no exits past Iron Horse Park. It appears that you can continue off the pavement if you like to off road it.
If you plan to use the bike path to get somewhare then getting off a Whipp or through Iron Horse to Millshire Dr. would be best.
The leaves are starting to fall on to the paths.