Hi!
I've been trying to look for good places to do altitude training for a marathon for 4 weeks from early march to early april. My first choice was font romeu but they were fully booked. The other options I am considering are Sierra Nevada, Kuhtai Austria, and St Moritz in Switzerland. I haven't been able to find good info online about suitability of any of these locations so I thought I should go ahead and ask here. Budget aside, which of these options do you think is the best in terms of running terrain? Also, are there other options I haven't mentioned that you know of, that you would recommend?
Thanks!