Located at the SLAC National Accelerator Laboratory, this 17,600-square-foot facility contribute to the health and wellness of the laboratory’s employees and visiting scientists. The rec center is the sixth Stanford University sports facility to bear the name of donor John Arrillaga and his family.


  • All personnel must fill out a liability waiver form prior to using the Recreation Center. This includes guests. Liability Waiver for SLAC Patrons
  • A SLAC Badge is required to get to the Recreation Center, and must be swiped on the badge reader upon entering.
  • Guests must be escorted by a SLAC Employee at all times, limit of 3 guests per SLAC Employee.
  • Guests must sign in on the visitor sheet upon entering the facility.
  • No one under the age of 18 is allowed in the facility.


CLOSED due to COVID-19


Arrillaga Rec Center at SLAC (ARCAS)
2575 Sand Hill Road
Building 55 (Eastern SLAC, on Pep Ring Road north of Building 901)
Menlo Park, CA 94025

Front Desk: (650) 926-3313 and Fitness Center: (650) 926-3314


Available to rent front the front desk, $10/quarter $30/year.


The ARCAS parking lot is for Recreation Center patrons only during their visit, you may not park in our lot all day.

Facility Rental

For facility rental inquiries, please contact Alisha Garcia at alishag@stanford.edu.