Oh, bull. You DID have to go to the county conventions. Boo-hoo. That’s the way it was done in most states until recently. Guess what? You know why counties are called COUNTies? Because that’s where they COUNTed voters in the days of the founding fathers. OK, Counties had less area than they do in Colorado, but then again, you had to ride by horse.
UPDATE: OK, that turned out to be a linguistic coincidence. You were expected to travel to your county seat, but the term originates as the “seat” of the rank of nobleman known as a “Count.”
Here in Washington state my precinct caucus was abut 1.5 miles from my house. I went to the district caucus which was about 6 miles from my house.
I’m going to the state convention as a delegate - about 300 miles.