Logged around 14.9 miles, +4331ft gain.  Ontario summit is 8,696ft.  Bighorn summit is at 8441ft.  Did Ontario first – had a cloud inversion and great views of Baldy the whole way up!  A bit crowded at the peak but it was a Sat.  Bighorn is about a mile offshoot from the Ontario trail and uphill another 600ft, but cool to get more of a workout in and say you did it.  It got hot so definitely start early if going in the warmer months and bring lots of water.  A few trail obstacles included multiple logs down that you need to straddle over, loose rocks, and some bushwhacking on the Bighorn section.  Otherwise in good condition – do it!