The distance of the track itself isn't too big, but the corridors and rooms seem built for titans. If it were an industrial setting, the large areas wouldn't seem so out of place, but the office environment (and the props inside the environment) tend to clash with it.
I'd "fatten" interior walls and inaccessible-eyecandy rooms in order to make the corridors narrower and to break up the centers of large rooms. This has the nice side-effect of turning "Huge Room" into "Multiple paths".
There were a few places where signage was no longer valid after the route became one-way-only, etc.