You start from the same trailhead as the standard route but about 1.8 miles into the trail you
take a right up towards Kelso mountain to take the ridge line. It's a pretty obvious turn and clearly looks much more intense than the standard well marked/traversed trail up towards Grays.
Brian and I started up to the ridge and made our way around the first couple rocky outcroppings. The rock is solid and there are plenty of handholds. The first big obstacle is a fairly steep gully that you climb up and over. Again plenty of holds and we had a great time. Eventually you make it to the gully before the knife edge where there is some more of the steeper scrambling. At this point we had caught up with a couple large groups in front of us and there was a bit of a log jam the rest of the way.
The knife edge is very exposed but it’s very short and easy to climb or shimmy over. After the white rock (that immediately follows the knife edge) it’s smooth sailing up some scree to the top top of Torreys. I am glad we had helmets, there is plenty of potential rock fall from any climbers above you.
I’d say Kelso Ridge is a little easier than Longs Peak with the knife edge being the only part that got my palms a bit sweaty and heart pumping.