Just to put some numbers on it:
if you had one 100 foot wire and one 1 foot wire, the wave propagation delay would be around 0.0001ms (a tenth of a nanosecond). For comparison, that's the same amount of delay that would be introduced by the speed of sound if the speakers were different distances from the listener by 0.001 inches. For a 1ms delay, which is generally well below what anyone would notice, you'd need a wire that was 186 miles long.
So, as noted above, no. You definitely won't notice. At worst you'll put some additional stress on your amp.