140 Chapter 6 Event Age category Performance benchmark (%WR) 200 Butterfly 17 111.6 50 Freestyle 17 114.9 100 Freestyle 17 110.9 200 Freestyle 17 109.4 400 Freestyle 17 110.8 200 Medley 17 112.0 400 Medley 17 111.8 50 Backstroke 18 111.3 100 Backstroke 18 111.1 200 Backstroke 18 110.9 50 Breaststroke 18 114.3 100 Breaststroke 18 112.8 200 Breaststroke 18 114.0 50 Butterfly 18 117.4 100 Butterfly 18 113.7 200 Butterfly 18 111.2 50 Freestyle 18 113.9 100 Freestyle 18 111.1 200 Freestyle 18 109.1 400 Freestyle 18 109.6 200 Medley 18 110.8 400 Medley 18 110.9
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