Follow the directions on the main page under "Getting There" to reach Crater Lake at the base of the mountain. From there, the summit is approximately 1 hour of climbing away (and c. 1500 feet of elevation gain).
From the northern shore of Crater Lake, take a cross country heading NW directly up the gentle (and sparsely forested) slope. As you get higher and leave timberline behind, the slope becomes scree covered. Continue heading uphill traversing slightly northward (right). This heading will soon bring you to the top of Krag Peak's Southeast Ridge.
Once on the ridge, follow it (roughly NW) keeping mostly to the ridge top proper (occassionally skirting difficult terrain to left or right of the ridge top). When the ridge turns north (right) and becomes vague, scramble up the (loose!) south face of Krag Peak to its summit. From the summit, you'll see two other formations: the "north peak" and the "northeast peak" (both lower than the highpoint you're on). Total time from Crater Lake to summit is about 45 minutes to 1 hour. Retrace your steps on descent.
Hiking boots and possibly hiking poles are all that you'll need under dry conditions. With snow present, ice ax and crampons are highly recommended.
If you have information about this route that doesn't pertain to any of the other sections, please add it here.