From the top of Stony Pass, look for a trail on the north side of the road that heads directly up the south slopes of Canby. The trail heads directly up a tundra slope, then turns NNW as it follows a tundra bench above some lower cliffs. It crosses an area of rocks & talus and then returns to tundra as it leads upward to intersect the NW ridge of Canby at 13,080 ft. Once you gain the ridge, turn abruptly SSE and follow the ridge to the summit of Canby. The lower ridge will be mostly tundra. The upper ridge will turn to smaller talus and rubble. Though not particularly exposed, the upper ridge narrows and drops off precipitously on the north side to add a little excitement.
From the summit, take in the fine view of the Grenadier range to the south. If you have not climbed Storm Peak viewable to the north, you may want to study its south side for future reference. For a descent back to your vehicle, head back down the NNW ridge but watch for a scree slope on the left, a couple hundred yards down from the summit, where you can glissade down small talus for several hundred feet and intersect the trail that cuts across the south face of Canby.
Bonus Points: On the south side of Stony Pass, there's Unnamed 13,165 (Stony Pass Peak - ranked) which can be climbed in under an hour. Or, make it a full day by also including Sheep and Greenhalgh Mountains to the ESE of the pass and Galena Mtn. north of Canby. In addition, the July wildflowers near the top of Stony Pass, especially on the north side can be spectacular.