Jaclyn Sienkiewicz | Coach

Jaclyn is a former division one college basketball athlete. She is also marathon runner with a PR in the Boston Marathon of 3 hours and 8 minutes. Her love of sports, fitness and coaching inspired her to become a group fitness instructor and national trainer for Les Mills. After discovering CrossFit, Jaclyn fell in love with this style of training and the endless opportunities CrossFit provides for athletes of all levels to compete on a daily basis while being surrounded by a fun / healthy community! Jaclyn currently works as the Senior Program Director for the Y in Central Maryland. She is also a national trainer for Les Mills BODYPUMP and Les Mills BODYATTACK.


  • Les Mills National Trainer
  • CrossFit Level 2 Trainer
  • CrossFit Kids Trainer
  • Aerobic Capacity Ambassador
  • USAW
  • ACE
  • AFAA
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