10,500 for mule deer.

Started in a camp near a sign indicating Continental Divide, I recall (1985) it was around 11,200 feet.  The three of us had bad headaches the first night. We moved down to around 10,000 and hunted from the 2nd day on. Felt much better and hunting up and going down to camp was  more pleasant.  Had to get to the elevation we wanted to hunt before AM thermals caused our scent to rise.

Forgot to give location-- outside Kremmling, CO.

ttt

A little over 12,000 mark for mulies.

QuoteOriginally posted by LBR:
Finally found my lungs as we were packing out...figures!

Chad,

That's what you get for leaving your lungs in your back pack!            

Bill

13,000 feet on a Colorado ewe sheep hunt several years ago...

I live at 7200 feet elevation and regularly hunt at 7000-11000'.  I reckon I've reached 12k elevation a time or two.....never thought about it much.