Definition of pace:
(n) :
a
step taken with the
foot; an English Customary Unit of distance measuring approximately five
feet.
[: English Customary Weights and Measures, (C) Russ Rowlett and the University of North Carolina at Chapel Hill (?: Distance, ? No 6)]
"even at the duel, standing 10 paces apart, he could have satisfied Aaron's honor."
(v) :
walk
to and fro in a small space; set the speed in a race
(preposition) :
with all due
respect to