Welcome to the Arrillaga Recreation Center at SLAC. Located at the SLAC National Accelerator Laboratory, this 17,600-square-foot facility and the 7.5-acre recreation grounds 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.



2017 46th Annual SLAC Race

Date: Thursday, November 9 2017
Time: 12:00PM

Start Line: Arrillaga Recreation Center at SLAC
Distance: 2 Mile Run or 1.4 mile Walk, only runners will be timed.
T-Shirts: Shirts will be available on a first come first served basis, once they arrive they will be for sale at the Recreation Center for $15.00. We will send an email out when shirts are available.

Interested in shirts from last year? We have them for sale for $5.00 at the Rec Center as well!

Questions: Please contact the Rec Center at x3313




  • *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.
  • To stay in the loop for Recreation Center announcements and activities, there is an ARCAS, Wellness & Events Listserv:


Open: 24 hours a day, 7 days a week, using activated SLAC Badge.

Staffed: Monday – Friday 6:00 AM – 7:00 PM


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/Fitness Center: 650-926-3314



Looking for H.I.P. Group Exercise and Healthy Living Classes at SLAC?

Link Here

Interested in a Fitness Consultation with SLAC Staff?

You will meet one on one with an ARCAS Staff Member for 45 minutes to talk about your goals, and run baseline tests to determine your fitness level! We will create a workout plan for you to follow and you will check in with us over the quarter (every 4 weeks) to re-test and see how much you have improved. Consistency is one of the big keys in reaching your health or exercise goals, and we plan to be there with you every step of the way!



1. All patrons must sign a Liability Waiver upon first visit.
2. All patrons must swipe their SLAC ID every visit.
3. No one under the age of 18 is allowed in the facility or on the field.
4. No pets are allowed inside the facility or on the field, except for guide animals.
5. No talking on cell phones on the fitness floor. Personal music cannot be played audibly, please use headphones.
6. No personal items such as book bags, coats, etc. are allowed on the fitness floor. Please use lockers. Day Use Lockers are cleaned out at the end of every day, please only use them while you are in the facility. Rental lockers are available, $10/quarter, $25/year.
7. No food, drink (other than water), or glass containers are allowed on the fitness floor. Water must be kept in a spill-proof container.
8. The Recreation Center and its employees are not responsible for lost or stolen property.
9. For sanitation and safety reasons, and to protect the equipment, patrons are required to wear proper workout attire. Shirts, shorts/pants, and clean, closed-toes shoes are required. Jeans (full length or cut-off) or pants (with belts or exposed metal) are not permitted in the Fitness Center. Shirts must be worn at all times, bare mid-drifts are not allowed.
10. Please wipe down exercise equipment after use. This includes strength, cardio, and mats.
11. After use please return all weights and equipment back to its proper place.
12. Please do not disturb classes in session.
13. Only Stanford Recreation Employees are allowed to conduct training sessions.
14. 30 minute time limit on cardio during peak times.
15. Please report any facility related injuries or incidents to the staff on duty.
16. Do not remove equipment from the Recreation Center.
17. No dropping of dumbbells, bars, and plates.
18. No chalk allowed.
19. Any filming, photography or postings at the Recreation Center must be pre-approved by General Manager.


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.


For facility rental inquiries, please contact Kaela Watson at


Guests must be escorted by a SLAC Employee at all times, this means the Employee must remain in the Rec Center during their entire visit.  Guests must sign a liability waiver upon their first visit, and must sign in on the Visitor Sign-In Sheet every visit.


If you are staying at the Stanford Guest House, you may use the Recreation Center during staffed hours (6:00am-7:00pm) by purchasing a $10 Day Pass at the Guest House Front Desk.

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