Fairburn mountain summit and geocache, Black Hawk.
Fairburn Mountain is an all too often overlooked peak in the Gilpin County high country near Black Hawk. It's easily accessed from Cold Springs Campground, which has a free picnic area parking lot, perfect for day hikers. The summit altitude is around 10,420 feet. My summer roundtrip was nearly 3 hours, although I spent quite a bit of time on the summit.
There is a summit register here and a geocache. You can see by checking both of the logs that this is a lonely mountain. It's a great trip for a bit of trailless backcountry solitude.
Be aware of Bears in this area! Activity is very heavy.
For lodging options, the nearest hotels are the casino hotels in Black Hawk. This hike starts in Cold Springs Campground, a pretty National Forest Campground, or there is a developed campground nearby called Dory Hill Campground.