I did it 3 times (July 9,10 and 11) of this year.
It was fantastic!
The real fun was in the bull ring where you get to play “dodge the bulls” for 20 or 30 minutes after each run. However, you must run with the bulls and get into the bull ring before they close the gates (behind the last bull). Position yourself along the last 400 yards of the run so you don’t miss this part.
Its like being a rodeo clown along with 200 other crazy thrill seekers. I highly recommend it but stay away from the bulls they release into the ring for the first minute or two and wait until they get tired and slow down. There were some serious injuries this year when people jumped in front of 900 pound bulls running full speed.