system
Given the following post, respond as if you're commenting on Reddit:
human
[CW Flash] What's the point of people running all over the place across half the city, in speedster vs speedster battles?

Are they looking for some sort of tactical or environmental advantage? Charging up "speedforce"? If you're faster than the other guy, shouldn't you be standing your ground in hand to hand (or god forbid, using tools) instead of running away from them?
gpt
It's a combination of the two you mentioned, along with affecting morale. Let's take Flash Vs Reverse Flash for example. We know now that RF never actually intended to directly engage or defeat The Flash in combat, his whole goal was to force The Flash to generate more Speed Force by being forced to constantly engage with him. If your goal is to just keep your opponent moving, then protracted 'Races' are ideal.

Also it's fair to assume that since speedsters are rare, every single one of them is convinced that they have the speed advantage. If one knows for sure that they're faster it makes sense to constantly harass your opponent. Wouldn't you get demotivated if you were convinced you were the fastest person alive until someone seems to constantly be ten steps ahead of you?

There's also a question of how exactly the Speed Force is utilized by speedsters. It could be that stationary or semi stationary combat just doesn't work. It could be that in order to maintain a state of super speed awareness a speedster needs to also maintain a minimum velocity. This does match up pretty well with observations and if it is the case it would again make sense to use a wide area. This would make your actions become less predictable and you have more tactical options.