Answer:
In buckles or lace I help set the pace. The farther you go the thinner I grow.
I am heavy forward, but backward I'm not. What am I?
I look at you, you look at me. I raise my right, you raise your left. What am I?
I run through hills. I veer around mountains. I leap over rivers and crawl through the forests. Step out your door to find me. What am I?
I regularly change shape yet remain a sphere. I am always there but not often seen. What am I?
If I say "everything I tell you is a lie", am I telling you the truth or a lie?