 The general verdict is that Zeno was hopelessly confused about relative velocities in this paradox. If the \(B\)s are moving with speed S m/s to the right with respect to the \(A\)s, and if the \(C\)s are moving with speed S m/s to the left with respect to the \(A\)s, then the \(C\)s are moving with speed \(S+S = 2\)S m/s to the left with respect to the \(B\)s. And so, of course, while the \(B\)s travel twice as far relative to the \(C\)s as the \(A\)s, they do so at twice the relative speed, and so the times are the same either way. But could Zeno have been this confused? (Sattler, 2015, argues against this and other common readings of the stadium.)