One time we went up there the GPS track had elevation gain at 3881' [masked] min/max), 11.8 miles. It took us a bit over 10 hours to do it.
The descriptions of the last few trips were pretty accurate. Extremely difficult, poses a challenge that is physical/spiritual/mental/psychological.
Please assess your own capability of doing it.
Meet us at Milagro Coffee at 7:00 am; or, at La Cueva picnic area parking lot at Dripping Spring State Park at 7:20 am.
The following picture is Samat's GPS track of the route.