In the act of running
racing, speeding, jogging, pacing, galloping, cantering, trotting, scuttling, scudding, scampering, fleeing, bounding, whisking, sprinting.
In the process of running
producing, operating, working, functioning, proceeding, moving, revolving, guiding, conducting, administering, going, in operation, in action, executing, promoting, achieving, transacting, wielding, determining, bringing about.
Extending
spreading, reaching, encompassing; see extending.
Flowing
pouring, tumbling, falling, dashing, coursing, streaming, swamping, washing over, laving, watering; see also flowing.