The trail follows the pipeline for just under 1 mile and then you have the option to move onto single track or stay on the pipeline trail. If you look at the map and see the straight line, that is the pipeline. There is a flat jeep road that parallels the pipeline that is where you run.
The rest of the trail winds through the cedar trees and has a few short but steep climbs. It can be a bit confusing because there are many intersections that look similar. I used the tin box (see slide show) as a point of reference at one of the intersections.
I am not sure if I would recommend running alone out here. There are what appears to be a few homeless camps set up within the woods. I didn't see anyone, but I would at least take your dog. You can see from the slide show that parts of this trail have been turned into a dump, but the majority of the trail is nice.
Overall it is a great option for those that live on the Eastside and want to be able to hit up single track starting from your house. Length is about 4 miles without overlapping.