As a kid I grew up next to a family named "Bull". Their uncle had a farm out in the country and his prized piece of livestock was naturally a mean-spirited bull. We'd run from one side of his fenced pen across to the other. It would get him angry and he'd snort and maybe take a step or two towards us, but nothing too outrageous or dangerous.
I had just completed a run across the pen and hopped over the fence to safety feeling quite proud of outrunning the bull and living to boast about it when their usually friendly miniature poodle "Janey" up and bit my in the leg!
I don’t have to go all the way to Spain. If I wanted to run with bulls, I could just go out in my neighbor’s field and play with his Brahma Bulls. No doubt they would be glad to chase me down, stomp on me, and gore me with their horns and I could save that air fair to Spain. So come on down and save some money on air fare.
When young on 2 occasions I was chased by bulls. The 2nd one was a Jersey, I was weaving around trees while trying to break the sound barrier in a straight line, twice I felt his hot breath on my back, I found another gear.
Go to Spain and let a bull chase me, no thanks it is long out of my system. I've had my Run Forrest Run moment.
besides I would now need a 60 year old bull to make it fair.
They have traditions going way back like running with bulls and fighting them in an arena. Though I find these exciting, I have none of the traditions in my background or blood so I think it would be a mistake to pursue them. If I ever wanted to do this it was a quick and totally irrational fantasy.
PS: People have gotten hurt a LOT worse than this guy.