If you can swing 2 to 3 weeks, why not. I went 2 days before the race and it wasn't as bad as I expected. Didn't feel the altitude at all until the run and at that point the heat was worse than air density.
Edit: Maybe I should clarify that by "as bad as I expected" refers to the altitude's effect on my performance. It wasn't a comfortable run by any means but I was still able to be a couple minutes from my PR at the time.
Oh ok cool.
Yeah I'm definitely thinking about going at least 2 weeks early to make it a kind of a vacation. I'm thinking of going to Frisco first and then possibly Blackhawk. I could go to Boulder the whole time, but think if I go higher first, I might be stronger at Boulder altitude.
Frisco is 9,097ft and Blackhawk is 8,537ft.
I'm just familiar with Frisco as I've been there a couple of times. They have a dispensary there that I like with Kaviar Sativa joints, which are my favorite (don't worry, they are plant based). And a Whole Foods in Frisco (yum!). I play poker too so I could chill out at Blackhawk and train and play some small tourneys there before the race.
Then head to Boulder for the last week or so.
Not sure yet - but appreciate the feedback. I'm not looking to shatter any records here. Just to have fun, be prepared, and be poised for a good effort and to have fun.