We did the Mount of the Holy Cross summit hike as part of a backpacking trip. We stayed the night at Lake Constantine, which was beautiful. We got a late start in the morning (10am) and started heading up towards the Tuhare Lakes. This was a very beautiful hike as well, with tons of wildflowers and several small waterfalls. We were following a route that had been shown on summitpost.org, which showed a route going up the ridge just to the north of the lower Tuhare Lake. Unfortunately, there was no trail. We were able to make it to the top of this first ridge in about 2 hours (the route was trailless bouldering the entire time). We then hooked up with the trail that shoots off from the Notch Mountain trail. However, there wasn't much of a trail (more bouldering), and it was a very, very long hike to get to the summit still. We had to climb up and over several thirteeners and walk around the ridge, approaching Mount of the Holy Cross from the south side. We almost gave up several times. But, we kept pushing on and made it to the summit at 4pm. We took a different route down--we dropped into the upper Tuhare Lake basin and made our way around the lake, down and around the lower Tuhare Lake, and finally back down the hill towards Lake Constantine. We made it just as it was starting to get too dark to see. All in all, it was an absolutely amazing hike--we got to see almost 10 lakes in 5 valleys. However, it was probably the most difficult route to take, with the most bouldering. I would not recommend this route if you are just looking to summit the mountain as quickly as possible. It was an 11 hour hike for us and we were under-prepared, but we made it with determination.