using root motion from the animation without looping back to start

i am writing an AI system for NPCs and want to use animation root motion vs. moving with rigidbody.MovePosition, maybe that's a bad idea?

anyhow, if i set root transform position xz in the animation, it moves but then loops back at the end which is not what, i want for walking, running, etc

any ideas how to keep it moving?

thx