From Agnew Meadows, follow the Shadow Lake Trail to Shadow Lake. Continue on the trail past the JMT junction. 200 yards below the outlet of Ediza Lake, you will see a small wooden bridge crossing Shadow Creek. Do NOT cross the bridge, but instead stay on the right (north) side of Shadow Creek. Follow a rough use trail along the right side of the creek and eventually, along the right side of Ediza Lake. The use trail will become easier to follow after some short boulderhopping. Good campsites abound above the NW corner of Ediza Lake.
From Ediza Lake, climb into the large valley below Mt. Ritter & Banner Peaks. You will see a very obvious gully heading west, up the flanks of Mt. Ritter. To the left of this gully is a large granite dome, and to the right of the gully are a series of rocks with scrawy pine trees/bushes growing out of them. Follow this gully all the way to its top, and exit the gully to climber's right. You will then see a moderately steep talus slope heading up NW towards Mt. Ritter. Follow this up to a steep snowfield with huge suncups. Cross this snowfield and angle upwards to the left, gaining the obvious small col between the lowest two of the Ritter Pinnacles. From this col, traverse across a snowy gap (crampons required) and exit onto the SE glacier. From here, follow the normal SE glacier route and the chutes to the summit.
Crampons and Ice Axe required
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