As you may know, I was in Mexico last week. I picked a random city when I realized I had one week to use my travel voucher and I went. I picked Mazatlan. I knew nothing about it and just went.
So, when I heard some guy down there say there was a marathon in Mazatlan I figured he did not know what he was talking about. I guessed he meant a 10k.
Of course, the way my luck has been this year, of course, I missed the marathon ACTUALLY being run in Mazatlan by a few weeks. (Click on the US flag to read in English)