This is a 5.4-mile/8.6-km point-to-point route from Egypt Lake Campground to Ball Pass Junction Campground via Whistling Pass. The stored line follows the one-way corridor through Whistling Valley; it does not duplicate the route for a return trip and does not include the longer approaches from Sunshine or Vista Lake. Allow about 4 hours for the route, with extra time for a pack, breaks, and uneven footing.
From Egypt Lake, the trail climbs through Whistling Valley to Whistling Pass, then descends toward Ball Pass Junction. Haiduk Lake is a notable stop along the way. A signed side trip toward Scarab and Mummy Lakes adds about 3 km and 300 m of climbing and is separate from the stored route.