This was easily the craziest sports story I’ve seen in a while.

When I first saw the link to this story, I assumed some racing machine had gotten out of control and flown into the stands and killed this 13-year-old kid.

No, it was far more insane than that.

The 13-year-old kid, all 4-foot-11, 81 pounds of him, was racing his motorcycle. At Indianapolis Motor Speedway. When he lost control, hit the ground and was run over by…  a 12-year-old kid.

This is nuts. Bonkers. What are kids 12 and 13 doing racing at Indy where, according to the AP story, their cycles can reach speeds of 120 miles per hour?

Where were the adults? Where were the officials? Where were the cops?

Peter Lenz, 13, is now the youngest racer to be killed at Indy, bloody Indy. I’m sure that will comfort his friends and relatives and the kids back at his junior high school.

And it wasn’t as if he hadn’t had a serious accident before. A “mechanical failure” last year turned into four broken bones and a severed radial nerve for Peter Lenz.

The fatal race was part of a MotoGP race weekend at the Brickyard. Several races. Including one, apparently, for children.

The story goes on about how motorcycling has a history of starting kids young, blah, blah, blah.

I don’t care what its history is. I don’t care — and you shouldn’t either — if not allowing 12-year-olds to run over 13-year-olds in a sanctioned event somehow harms their “development” as racers.

Kids that age should not be on this sort of track doing those sorts of speeds. I’m already squeamish enough about go-karts for the minor-minor crowds. One of those GP-type cycles, taking turns at high speed while their inside knees almost scrape the ground …

Insane.

Can we just pass a rule … or a law, given the intractable nature of all motor-racing bodies, who like to talk about “accidents will happen” — that nobody races in a sanctioned race under the age of 16? Which, at least, is when kids are about as grown up, physically, as they are going to be and when we allow them (in most places) to begin operating motor vehicles.

A 13-year-old. Killed at Indy. Unforgivable.