Back to the Horsetooth Mountain Ride map.
This road is one that originates near the boat ramps into Horsetooth Reservoir in the little town of Stout, Colo. It serves a small residential subdivision near the "inlet bay" area of Horsetooth Reservoir, then heads up into the foothills, ultimately ending at some radio towers on the ridge North of Horsetooth Rock. It is NOT a mellow country lane. It is a STEEP, washboarded, service road. It is probably the easiest way up to access the northern and western parts of Horsetooth Mountain Park, but that's not to say that it's easy. Everything in that back part of the park is steep, but at least the service road isn't also technical.
This road is an alternative way to access Horsetooth Mountain Park. You can basically get into the park from the fee area parking lot, via this road, or by helicopter. If you are riding your bike up from town, finding this road out of Stout would be a decent alternative for getting off the pavement sooner then if you ride all the way to the parking lot. You reach it by staying on the road all the way through Stout, going up and over the ridge, then looking for the turnoff to Inlet Bay. If you are coming from Lory State Park, this road is probably the way you'll come into the park.
There is eye-popping steep portion of the road from where it starts climbing to roughly the intersection with the Harrington Trail, then another couple of lung-busters after the intersection with the East Ridge Trail and before the intersection with the Mill Creek Trail. The section after the intersection with the Mill Creek Trail and before the radio towers is so steep, I've never been able to ride it (of course I'm usually pretty beat up by then from trying to make the previous sections clean).