FATMAP difficulty grade
This is a short and sweet loop from the Seamans Gulch trailhead, and is the biggest single loop you can do on the trails here.
It makes a scenic workout that's convenient to the west side of town.
The loop goes steadily up a hillside then onto a ridge, with panoramic views over all of Boise and across to the Owyhee Mountains.
The surface is hard-pack and all nicely graded.
These trails can be too muddy to run after snow or heavy rain, but tend to dry faster than some other trails in the area.