12.8 mi to summit
27.4 mi total
8,727 ft start
5,182 ft gain
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In short for the approach Sky Top both ways is far easier. Terrain is easier, and it is also prettier with more possible camp sites. It looks like on the topo map that Aero Lakes has more trail but this isn't true to reality. The use trails to Sky Top are well developed and beyond a couple water crossings pretty much just walking. Aero Lakes going from Lower to Upper, and Upper to Camp are exhausting boulder hops that require route finding.
That said I did Sky Top up and Aero down to simply see more of the area.
Now on the climb itself. The Southwest Ramp is no bones about it a basic class 3 climb. It requires simple route finding and basic scrambling. That said, I did it when all the snow was melted. If you also choose to do it with melted snow (Labor day-ish) then you should avoid the fixed lines people seem to leave the just scramble. None of the scramble is exposed. Finding the ramp itself is easy as well. As far as the dreaded 'rock fall' I can honestly say that its nothing special. If you've done Middle Teton you've experienced worse. Stay together, where a helmet, and be aware of parties ahead and behind you. The exposure to rock fall is minimal (30 minutes tops) and anyone trying to spook you on this factor has a motive.
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out-and-backstream crossing, rockfall/loose rock
helmet, trekking poles, GPS device, wine