Directions taken from the White River National Forest Website: From I-70 take Exit 205, Silverthorne/Dillon, and travel north on HWY 9 (a short distance) and turn left at the first traffic light, Rainbow Drive/Wildernest Road. Travel 3.6 miles on Wildernest Road (turns into Ryan Gulch Road). You will pass many condos and at the top of the road there will be a trailhead parking area on the left. There are two trailheads at this parking area, be sure to start at the Buffalo Cabin Trailhead, which is the more northern one. Our Note: in 2011 there were no restroom facilities here of any kind - not even a port-a-potty. We would also not recommend trying to stay overnight in your vehicle, in part because there are condo units very close by. This is also a very popular trailhead and parking spots can completely fill on weekends so arrive early.
There is no camping anywhere close by this trailhead. The closest campgrounds are north on SH9, the first being the Blue River CG, then further north, there are other national forest fee campgrounds located on both sides of Green Mountain Reservoir.