OverviewThe North Ridge is a class 2 route from Grizzly Gulch up to about 13600 feet where it joins with the Kelso Ridge. To summit Torreys Peak from this junction, the class 3 section of Kelso Ridge including the White Tower must be surmounted.
Getting ThereEroica Couloir on the north face of Torreys Peak. Exit Bakerville from I-70, follow the Stevens Gulch Road (189) about one mile to a junction with the Grizzly Gulch Road (189.1C). Turn right and drive up Grizzly Gulch about 0.3 miles to the Grizzly Gulch Trailhead. Hike or drive about 1.1 miles from the trailhead to a meadow at about 10740 feet. Bushwack south up the forested hillside to a bench just around treeline at about 11600 feet. You should see the North Ridge heading south from this bench. Mileages, road numbers, and elevations paraphrased from Gerry Roach's "Colorado Fourteeners" Second Edition.
Continue up Stevens Gulch to the Grays Peak Trail and follow that until you can cut off to the Torreys-Kelso saddle. Cross the saddle, drop down on the other side, and contour roughly northwest across the basin between Eroica and Kelso Mountain. I haven't personally done this, but it appears to hold no great difficulties other than the extra mileage and elevation loss.
Route Descriptiontalus and scree from the bench at about 11600 feet to about 13600 feet where it joins the Kelso Ridge route. There are no particular difficulties but it is fairly steep and the rocks are prone to rocking, rolling, and sliding. Once you arrive at the Kelso Ridge route at 13600 feet, you should be prepared for the difficulties of the upper part of that route. The easiest way down from here in most conditions might be to descend the North Ridge route.
If descending this route, take great care to not cut down too early to the northeast. There are two ribs directly on either side of the Eroica couloir and these should be avoided.