Wow - the Rock N Roll San Antonio marathon is capping runners at 30,000. Yeah, 30k! Rumor has it that 28,500 are already registered. I think last year, before it became a RNR event, there were about 5,000 runners - for the marathon, HM, and 5k. This is 30,000 for the HM and marathon. Sounds like it'll be crazy. I'm already blaming what's likely to be a not-so-good finish time on the crowds!