Yeah, it's a problem! I've done 93 a few times, but it sucks.
The Rocky Mtn Cycling Club has a route that goes from Boulder to get to Coal Creek Canyon, it goes out east, it adds a lot of miles, and cuts of the worst of 93, but not all of it:
Cherryvale
E on Marshall Dr
S on McCaslin
E on 128
S on Simms
W on W100th (follow around/name changes)
S on Indiana
W on 72/Coal Creek
then you get to 93.
You could modify this and stay east longer (not turn on 72), but since I haven't done it, I don't have anything to recommend. Hopefully someone further south will chime in with a recommendation.
I'll be checking in on this thread, I'm looking for a better route myself!
