In our games, I made 6 sec rounds instead of the standard 10 sec.
This isn't a big difference, but it helped reconcile movement and exactly what someone could do in 1 round.
Also, Dash for Movement was brought up earlier along with an attack. I didn't see it mentioned, but I make this a 100%Act action. I think from someone here. Therefore no attack (unless Hasted).
Looking at graphs of the fastest runners, there is a period where they begin, then speed up to their max speeds. So I say you can Dash, but it takes the entire round and it will be a Moving Maneuver and subject to the MM chart.