I (Vitalis Maximus) believe I am the second person to post a time for the Backbone Trail "Double-Crossing" my time was 41:33.09. I started at Will Rodgers went to Ray Miller and came back to Will Rodgers. My first crossing was unsupported, meaning i did not rely on water caches or support until Ray Miller. On my return trip I received aid at Kanan Dume.
out & back
1d 17h 33m 9s