My personal experience (i.e. ymmv) is that a) different comps and studios have different floor sizes, and the disparity can occasionally be huge, b) the (maximum) distance each individual figure covered changed significantly as my technique improved. When I started out, I'd be lucky (or suffering through what felt like a split) to get a natural turn moving more than a metre, metre and a half. Now, with a prep step, it's closer to three (in a straight line distance, with full body flight, and still feels light to execute and balanced).
My teachers used to, and still do, choreograph routines mostly according to the studio floor (although it's usually anywhere between 32-48 bars for waltz, typically in multiples of 4 or 8 for phrasing). I take it as a personal badge of pride when the originally fitting routines become too big for the floor (assuming maintenance of technique rather than "try-hard", of course). A visiting pro (top 12 in the world) once made the throwaway comment that a long side was around 8 bars and a short side around 4 bars. During the demo at a workshop later that day, they covered the long side of the studio in 4 bars of foxtrot - I think they were talking about a Blackpool-scale floor when they made that comment!
This reminds me of part of a competition review I read, written by Lindsey Hillier-Tate -
... showed nice floor craft in Foxtrot, which was quite an achievement for Ukrainian dancers. As my own experience of having worked as the Ukrainian National coach for quite a few years tells me, it is quite recent for them to start to comprehend what the floor craft really means, while taking it as a form of choreography or a collection of pre-programmed patches that should be utilized on cues. For example, one time a young Polish couple came over to take my lessons at my studio. The boy not once but twice in a row bashed the girl’s head against the wall. When I told him, "You cannot do that, " he replied, "Your studio is too small for my program."
I remember laughing so hard I ended up snorting my soft drink that I was about to gulp down. (Although I'm not sure how the Polish feel about being lumped with the Ukrainians and vice versa.)