In our area the tracks alternate weekends. There are three tracks, all within one hour of each other. (2 Off-road & 1 On-Road) One of the Off-Road tracks is only 8 miles form the On-road track.
On-Road every other Sunday,
Off-Road on alternate every other Sunday,
The other Off-Road track (an hour drive) runs ever other Sautrday on the alternate week of Off-Road track #1.
This gives everyone a chance to race whatever and wherever and sort of share the love. This also allows the persons opperating the tracks some time off to race elsewhere and relax.
Sure not all places can keep the doors (or in this case gates) open by running only twice per month; but we make it work.