Started our summit to Cucamonga Peak from Ice House Canyon Trailhead at 0600. Weather was nice up to Ice House Saddle. Tough climb to the saddle, but worth it. Once past the saddle, temperature kept raising and sun was intense. Made the climb more difficult. We made it to the top in 4 hours. Bugs were out in force. Got stung/bit on hand by some unknown black fly. I brought 4L of water and that was perfect for me. Others in my group brought 5L and 7L and used all of it during the hike. We took our time and took water breaks on the way down due to the heat. We got back to the parking lot at 1530. Hiked approximately 13 miles and climbed 3800 feet of elevation gain.