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Faulty Logic

5.10a, Trad, Sport,  Avg: 2.1 from 46 votes
FA: Chris Archer, Keith Gotschall, 1987
Colorado > Boulder > Eldorado Canyon SP > Rincon > Rincon - L of Center…
Access Issue: Seasonal Closures Details


This route takes the arete in between Emerald City and Over and Out, on the left side of the Rincon wall. In my opinion, it was not that great and is sort of contrived, but some people might think otherwise. The nice thing about this route is that it seems seldom climbed, so the most interesting part was finding the nice, key edges and holds without chalk already on them.

Start at the base of Emerald City dihedral and begin by climbing easy flakes right onto the arete. Pass two bolts that are placed at the crux and then climb up to a shallow dihedral, where more pro can be placed. Finish the top of the arete and climb the last short dihedral on the first pitch of Emerald City to the very rotten belay ledge shared by all the routes in the area. Finish on the last pitch of Over the Hill (great 5.9 finger crack), or the dihedral right above the belay (not so great 5.8). I would only really recommend this route if you haven't done all the other routes in the area, and are bored.


There are two bolts on this route, and besides that you don't need much. Bring a light free rack up to 1 inch. A set of nuts is really helpful.

Photos [Hide ALL Photos]

Aaron high on the arete of Faulty Logic.
[Hide Photo] Aaron high on the arete of Faulty Logic.
taken in 1990
[Hide Photo] taken in 1990
At the first bolt.
[Hide Photo] At the first bolt.

Comments [Hide ALL Comments]

Chris Dawson
Grand Junction, CO
[Hide Comment] Yeah, I definitely think otherwise. This route deserves two stars. The rock is good, and the first crux is really fun. I'm really only talking about the first pitch though. Nov 11, 2001
Bryson Slothower
Portland, OR
[Hide Comment] Contrived??? I think this is great route with fun balancy moves up the steep arete. Two stars!!!!! Feb 10, 2002
jason seaver
Estes Park, CO
[Hide Comment] I'll "third" the motion.....this pitch deserves at least two stars. Fun, varied climbing. Great for the winter as it gets more sun than the other routes in the area. Feb 11, 2002
Tony B
Around Boulder, CO
[Hide Comment] Personally, I didn't care much for it and I didn't think it was well bolted either. Of course that's my opinion, but I would not have given it more than 1 star. Feb 11, 2002
[Hide Comment] I found this to be just as enjoyable and of similar difficulty as Emerald City. Oct 27, 2003
Shane Zentner
[Hide Comment] Fun moves at the bolts and the dihedral. One may see a BD #5 stopper in the dihedral that I lodged too deeply to be removed(have at it!). We climbed to the top at broken rock and walked off to the left. Aug 29, 2004
Eran Viimeinen
[Hide Comment] Above the 2nd bolt you can get a bomber grey (between yellow & red) Alien followed by a #0 TCU and a #0.5 Camalot. We climbed almost every other route in the immediate area, and it's a much better route than it looks like from below. Recommended! Just belay at the ledge, bring up a 2nd, and then walk-off left. Feb 21, 2007
Black Hawk, CO
[Hide Comment] Contrived, not a great line. Jun 17, 2015