The Buckhorn Trail connects Buckhorn Road with the Indian Creek Trailhead. Historically is was a very well used trail by hunters and for forest users connecting larger sections of the forest. In more recent history it was commonly used by mountain bikers, even being recognized as an "epic ride" by some mountain biking organizations. Since the 2007 Zaca Fire, it has become overgrown and is no longer passable for mountain bikers. The Buckhorn is really a tale of two trails: the lower section from the Indian TH to Lower Buckhorn is open, mostly clear and sees quite a bit of use (mostly people passing on their way to Indian Creek. Whereas the upper section, above Lower Buckhorn Camp, is very overgrown and doesn't see much activity. There is very reliable water in the upper sections while the lower sections tend to dry up each summer.
The Santa Barbara Mountain Bike Trail Volunteers have made opening the Buckhorn Trail a priority in 2015 and beyond. While it will take a lot of time to reopen the trail, it appears that it will be mountain bikeable again sometime in the near future.