As it was Misano Grand Prix and I'm a fan of the man in the picture :), the word for today is 'motocicletta' (motorbike). A motorbike 'race' is a 'corsa' or 'gara', the 'rider' is called 'pilota' and they wear a 'tuta' (lit. overall) and a 'casco' (helmet). And if like Valentino, you want to say 'it was a great race', in Italian you can say 'è stata una bella gara'. :) See you at the next post!