Come and get your run on early. I've set up a group rate discount at $6 per person for Fairfax County residents ($8 for non-county); just mention meet-up at the front desk. If you forgot your ID in your car verifying county residence you can give them your zip code ie. burke 22015 or Springfield 22150 ;-)
Remember, along with your admission charge you are allowed to use the entire facility for the day; showers, weight room and pool for example. So come and get your day started early.
ATTN: GYM CLOSES AT 10 FOR LACROSSE