The extended set of combos has the same effect on me. From time to time I can muster the focus to do a few dozen of a given drill (combo, punch, whatever) in a row. But unless I'm in a room with other folks doing the same, I just can't maintain intent in a repetitive drill that long.Serious MA training can be boring. If you drill 250 hip throws non-stop, it can be quite boring.
It won't be too boring if you just repeat each drill 20 times.
I don't like to train just 1 punch or just 1 kick. I like to train 3 punches combo, 2 kicks combo.
I have 40 3 punches combo and 24 2 kicks combo. If I just repeat each combo 20 times, that will be
40 x 3 x 20 = 2400 punches and
24 x 2 x 20 = 960 kicks.
That will be more than enough to cover 3 miles distance.
The good news for me is that there's evidence training a given motion/task many times in a row has limited learning benefit. So there's not much reason for me to do 50 hip throws in a row (much less 250). I'm much better off doing 25 different techniques 10 times each.