The full-service Hammer Down CrossFit facility is located in Chantilly, Virginia at  14080-E Sullyfield Circle, Chantilly, VA 20151. Hammer Down CrossFit is in a 9000 Sq. Ft. Facility and offers a full schedule of classes taught by some of the best coaching staff you will ever find.  Every class is a unique experience and the friendly nature of our coaches and community keeps drawing you back to a new world of fitness and possibilities for your life.

Showers  There are 4 showers at our facility. So if you have to go directly to work or go back to work from a Noon class, it is a very nice option.

We are located right off route 50 on the Eastbound side at Sullyfield Circle.  If you are driving East to make a right on to Sullyfield Circle and we are about a quarter-mile down on the left.

The gym is easy to access from both Fairfax and Loudoun Counties, including the following locations:  Chantilly, Fairfax, Centreville, South Riding, Oak Hill, Greenbriar, Reston, Herndon, Tyson’s Corner, Manassas, Vienna, Oakton, and more.


Join this amazing community of individuals seeking elite fitness through CrossFit training.  No Contracts; as of January 1st, 2015 drop-ins will not be accepted; all memberships are monthly and may be canceled with 7 days notice of your next billing date. Contract documentation is for specific VA regulatory requirements. It should be noted, however, that you may cancel your membership without penalty. No contracts are longer than one month. When you sign the VA regulated document you acknowledge that your membership is auto-renewed; however, with 7 days notice via email you can be taken off auto-renewal.

Membership Options:

Unlimited Classes: $6.25/class based on one class a day, billed monthly at 175 dollars a month.

3x a Week: $11.58/class based on 3 classes a week, billed monthly at 139 dollars a month.

Todd Katz at for details.

Current Class Schedule

  • Monday: 5:00 AM, 6:00 AM, 7:00 AM, 10:30 AM, 12:00 PM, 5:30 PM, 6:30 PM
  • Tuesday: 6:00 AM, 7:00 AM, 9:30 AM, 10:30 AM, 12:00 PM, 5:30 PM, 6:30 PM
  • Wednesday: 5:00 AM, 6:00 AM, 7:00 AM, 10:30 AM, 12:00 PM, 5:30 PM, 6:30 PM
  • Thursday: 6:00 AM, 7:00 AM, 9:30 AM, 10:30 AM, 12:00 PM, 5:30 PM, 6:30
  • Friday: 6:00 AM, 7:00 AM, 10:30 AM, 12:00 PM, 5:30 PM, 6:30 PM
  • Saturday: 7:00 AM, 8:00 AM, 9:00 AM
  • Sunday: 11:00 AM – 12:00 PM Open Gym

Hammer Down Strongman (High Intensity, Functional Movement, with nontraditional gym implements. Learn how to flip a tire, pick up a heavy stone, heavy keg, work grip strength, etc.)

  • Sundays: 9:30 AM

Endurance Fit:  Tuesdays at 4:30 PM  A new an exciting class; especially if you like longer cardio type classes.

CrossFit Striking (A CrossFit class with the added element of striking (heavy bags, focus mitts, etc.)

  • Sunday’s 8:30 AM

Pilates for CrossFitters (A Pilates class that works those tight areas usually found in the squat and overhead position)

  • Saturday’s 7:00 AM

CrossFit Kids Class Schedule

  • Monday: 4:30 PM
  • Saturday: 10:00 AM

Class Reservations

Reservations are required for members attending classes. It helps us plan the workouts effectively, so don’t forget to sign up! Click here to reserve a spot for the class.

Try CrossFit at Hammer Down!

Curious about CrossFit? Come out and try your first class free and learn about it first hand. E-mail Coach Todd at to try a free class.