33.5+ miles, Lollipop loop of Henry Fork, Kings Peak, and Red Castle via China Meadow Trailhead.
Start/Finish
Kings Castle Loop
Kings

Wilson
Shortcut? ((1 mi))
Waterfall Shortcut
Camp #2A ((10.5 mi))
Camp #3 - Alternate (Camp here if weather is bad (8.5 mi))
Camp #4 (Basecamp here or camp here night #4)
Trailhead ((10.5 mi final day))
Camp #3 (Camp here if weather is good (13 mi))
Camp #1 (1.75 mi)
Waterfall
Camp #2B (Alternate)