Edit info
  • Open today, 6:30am - 1:00pm
  • (978) 459-5959
  • 345 Chelmsford St
    Lowell MA 01851


  • Reviewer Avatar
    5.0 star rating

    "Let me start by saying, I have never been a gym joiner, UNTIL SLS Fitness. The very few times I did join one, I never felt comfortable or that I was being..."

  • Reviewer Avatar
    5.0 star rating

    "Sls is what I feel like I've been looking for in a gym, but could never articulate. A place where the classes are hard af and encourage me to push myself?..."

  • Reviewer Avatar
    4.0 star rating

    "I've been a member for over a year now. This gym has the best variety of classes especially for folks who can't stand the treadmill. You can't possibly get..."

View all reviews on Yelp
Yelp Reviews