How many Horizon Finale's are there?

Hi, I’m new here so I’m not so sure. How many Horizon Finales are there? Are there Horizon finales every 15 championships until you reach 168 championships? Or are there only 2, the first one and the 2nd where you race against Ben? Or are there more than 2?

Thanks

There’s only the two.

Only 2, after that it’s just endless roadtrips until you finish them all.