I reckon it is as soon as you open your mind to the possibility that almost anyone “can” ride, and that everyones abilities are diverse, ranging
from riding one or two pedalstrokes to beyond. It is something you decide- most people who say “can’t” are responding automatically and are not trying to ride or do not want to try due to fears of injury or humiliation.
(Fifteen years ago) after two weeks of trying I started being able to ride places and felt like I had tipped the balance between can’t and can.
In addition to the ten familiar Unicycle Skill Levels (USA/IUF), the USA also has what’s called “Rider Level”, which is something like 0.5. It basically says you’re still a unicyclist even if you can’t yet freemount.
You’re there! Welcome!
And if you decide to stick with it, you’ll either be freemounting eventually, or not riding out in large open spaces free of stuff to hold onto.
Then yesterday was my first day as a true unicyclist, ended up lost in deep philosophical thought and I realised I was going in the opposite direction of where I meant to go! However before this I had done 20km…
I like the idea that it’s when you feel comfortable riding in front of people/around town, or even perhaps when it becomes faster than walking somewhere (although this may not apply to 20" riders, I’m not sure, those things are crazy).
Wow. Yesterday and today I did two things I wish I did when I first started: started riding witn no hands, and lengthened my seat hieght a good 4 inches. My control is bettter, I ride for as long as I have a straight path, and freemount progress is happened much more rapidly.