ummmm hard question. i don't really feel qualified to answer but ichishiho rivals since they were kids. like when they'd race as kids they'd try to be better than each other and they keep this up once they become like actual racers. while honasaki just let them have their fun. saki runs shorter on account of her chronic illness maybe(?) and hona runs longer because. idk it makes sense in my head. they're all rivals and all chasing after each other but especially shiho, but it's mostly ichika because she's always seen shiho as like the shooting star to run after. they all inspire each other to run of course. ummmmm. i really don't know about their running styles. saki pace chaser, ichika pace, shiho front, hona late/end? idonknowwwwww. do share if you have opinions though