At What Age Did Your Kid Rid The Training Wheels?

I guess I've been slacking as a dad when it comes to getting my kid off the training wheels lol. Apparently age six is on the older end of things, or so I'm being told. The family & I spent Memorial day weekend at Sun Lakes State Park... which is one of my favorite places to camp. We took the opportunity, and the pavement, to yank the training wheels off her bike and give it a go. And it was instant... she took off and was riding just fine! Barely any training what-so-ever. She was ready... and has been apparently. At what age did your kid learn to ride without training wheels?