70.3 Worlds Marbella Schengen Visa needed for US Citizens?

Hi - heading to Marbella and don’t originally think I needed a visa as my stay will be for tourism (+ the race) and well under 90 days (2 weeks).

However I see there is “Schengen visa” for sports tournaments less than 90 days. Is that something I will need to do?

Does Ironman check if you’ve gotten an approved visa from country of origin?

Thanks!