October 11, 2016
First, be advised that Aspen Valley Ranch is private property and visitors ride only a the pleasure of management. Waivers must be signed, trail work is expected, and donations are appreciated.
Once you've decided all that's okay, here's what is currently available: About five miles of beginner to lower intermediate singletrack mixed in with occasional double track and service roads.
Most of the singletrack is very nice, and it is consistently narrow owing to relatively low usage. It is not technical; most switchbacks are broad enough to allow most riders to execute theme without difficulty. There is little in the way of rocks, and steep spots are rare and short. Climbs are also mostly moderate and never long.
A first visit will require some getting the lay of the land, but subsequent visits will allow you to either do some leisurely pedal craning for about an hour or hammer out hardcore laps at altitude.
The ranch hosts a variety of community events, many of which are educational/outreach in nature, and often involving small children. It is best to check ahead and try to avoid events; you are less likely to be turned away, and once on the trail, you will find quite a bit of solitude, even in this relatively small parcel adjacent to the city of Woodland Park.