Rocky, rooty multiuse singletrack that gradually climbs until you drop into Crater Lake via series of precipitous switchbacks. Very scenic from both above and at lake level. Most mortals will not be able climb the switchbacks out without stopping a plethora of times along the way - they are mostly rideable though. Trail continues past Crater Lake and connects with Rock Creek Trail.
Take I-80 west from Laramie 40 miles to the Arlington exit. On the south side of the Interstate head west to FR 111. Take FR 111 south about 14 miles to FR 113 and the signs to Crater Lake. Take FR 113 to the trailhead. Alternatively, take US 130 west from Laramie about 40 miles to Sand Lake Road (FR 101). Take FR 101 north about 18 miles, past the Deep Creek Campground to FR 113. Take FR 113 to the trailhead.
http://www.singletracks.com/item.php?c=1&i=1802