Are you planning on Albuquerque this year?
No, I guess not (too late to sign up?) I found the altitude (even though I spent the 2 weeks prior up and down a lot) and travel (trying to do too much in one trip, lots of driving and camping/seedy hostel) working against me. Also I mis-calculated my fitness (more ups and downs!) But taking it all in was fun. Are you going? I think that might be a different story altogether...esp. if you are considering the 400/800.
I hear you re altitude and other factors! The 800m would be borderline for requiring some acclimation. 400 no problem!
Me, tempted but too much else going on right now.
Anyhow, here's to staying fit, healthy and fast, regardless of the forum :-)