It's an interesting conundrum: I believe the Calderdale/West Yorkshire audaxes (and there are lots) still advertise accessibility by rail. However, the ones that are on a Sunday (most of them) start before the first trains get in from either west or east and the ones that start on Saturdays (the 400s and 600s) start before the trains have even got out of bed, though the trains are really handy if you are going to stop the night before in the offered accommodation. The conundrum is that they don't really need to take advantage of the rail catchment area, which includes Leeds, Bradford and Manchester, because the events are very busy anyway. However, I'm sure a lot of the current riders would like the opportunity to leave the car in the garage. But there is a host of other factors, of course.
There are many events from Cheadle, too and I don't think any of them are truly accessible by train for the given start times, either. Again, their are other considerations.