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Arrillaga Recreation Center at SLAC

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Arrillaga Recreation Center at SLAC

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.

Fitness Classes at SLAC

Approved onsite SLAC employees can register for Group Fitness Classes at 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
Fitness Center: (650) 926-3314

COVID-19 Policies and Guidelines

  • As of 7/1: Face coverings are required at all times in the ARCAS facility.
  • All personnel must fill out a liability waiver form prior to using the Recreation Center. 
  • No guests are allowed at this time.
  • A SLAC Badge is required to get to the Recreation Center, and must be swiped on the badge reader upon entering.
  • No one under the age of 18 is allowed in the facility.

Staffed Hours

ARCAS is open 4am- 12am, for approved onsite SLAC employees. ARCAS is staffed 6am- 7pm, Monday through Friday. (*Depending on staff availability) 


Available to rent from the front desk, $20/quarter $60/year.

Facility Rental

For facility rental inquiries, please contact Alisha Garcia at

Staffing, Group Fitness and Equipment

Staffing, Group Fitness and Equipment Inquiries For other inquiries, please contact Sherin Thankachan at