RX2 X 600 pacing is 200 mod pace-300 fast pace-100 easy pace.1:30 rest between each setX 4Performance2 X 400 pacing is 100 mod-200 fast-100 easy1:30 rest between each setX 4Fitness2 X 300 pacing is 100 mod-100 fast-100 easy1:30 rest between each setX 4