The PCT within the Goat Rocks Wilderness varies in elevation from about 4,500 feet to over 7,500 feet. At higher elevations, rain or snow can be expected at any time. For this reason, through travel may not be feasible until late July and last only until mid-September. Crossing snowfields one-half mile long can be common in August. Ice axes are always recommended. Warm, waterproof clothing is necessary during the entire summer. This section of the PCT passes through some high alpine meadows. However, the majority of the trail follows the crest of the Cascades in rugged terrain.

The trail leaves Hwy 12 near the White Pass Ski Area and climbs steeply to the south for 3.5 miles before entering the Goat Rocks Wilderness. The trail stays near the ridge top as it passes Shoe Lake Basin (no camping allowed) and then descends gradually towards Tieton Pass. Continuing south, the PCT climbs towards Lutz Lake (at mile 12) and enters an area of open talus slopes at Elk Pass. The PCT becomes narrow, rugged and treacherous between Elk Pass and Packwood Glacier. The trail remains on high open slopes as it proceeds south toward Cispus Pass (at mile 22) and makes a slow descent before leaving the Wilderness several miles north of Midway Meadows.