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The Westfields Triathlon

The Westfields Business Owners Association through its Community Engagement Committee (CIC) is proud to host our Annual Charity Westfields Triathlon.   This event is truly a community event that is produced in partnership with the Fairfax County Park Authority's Cub Run RECenter and Fairfax County's Westfield High School along with our corporate and community sponsors.  This is a sprint triathlon that starts and ends at the Cub Run RECEnter.  The event is managed by the premier race management team of REV3.  See the Westfields Triathlon Website for additional information.

If you can't race, get a group of friends or colleagues from your business and help make a difference.  Sign-up here for Volunteers. 

Engage your community and help out in a worthy cause.  Sponsorships are the main revenue driver for this charitable race.  Please consider becoming a sponsor.  (Click below for details on Sponsorship Opportunities)

Sign up today to be a Sponsor of this great community event.


The Westfields Business Owners Association is proud to host our annual Westfields Triathlon powered by Revolution3 Triathlon.  The Community Involvement Committee of the WBOA is dedicated to providing activities, communications, community service and friendships within Westfields International Corporate Center.

This Westfields Triathlon marks the kickoff to the triathlon season in the DC Metro area.  Taking place at Cub Run RECenter in Chantilly, VA this sprint triathlon is a great way to dust off the cobwebs and get ready for a new season of swimming, biking, and running.  This event is also great for first timers who want to explore the sport of triathlon without all the pressure.

The swim takes place in the Cub Run RECenter pool.  Athletes will start 1 at a time in a time trial snake swim format. Athletes will swim 250 yards or 10 lengths of the pool.

The bike course is mostly closed to vehicular traffic and mostly flat on very good road surfaces.  A 2 loop course makes it spectator friendly and easy to navigate on this 12 mile total course.

The 5km or 3.1 mile run course takes place mostly on the cub run trail system which is on a paved surface.


Kids 7-8:  100 yd swim // .75 mile run

Kids 9-10:  100 yd swim // .75 mile run

Kids 11-12:  200 yd swim // 1.5 mile run

Kids 13-15:  200 yd swim // 1.5 mile run



Courses are subject to change.


Westfields Pool Swim Info from REV3 Triathlon on Vimeo.

Triathletes will assemble on the pool deck of Cub Run RECenter prior to the 7am start time.  There will be a brief warmup opportunity prior to the start.  This year’s swim will be SELF SEED, which means athletes will line up in order from fastest swimmer to slowest swimmer. We will have signs posted for your finish time to help the process so you will be able to line up behind your expected finish time.  Every few seconds a new athlete will enter the water and complete the snake swim, touching each wall with their hand and swimming under each lane line to the new lane until they have completed the swim.  A cone on the pool deck will designate the exit point.

Swim Course: Adult (250 yards – 10 lengths)



The bike course is mostly flat on closed off lanes inside the Westfields business park and surrounding roads making this a safe course.  The course is 2 loops and totals 12 miles.  Great for first timers or experienced triathletes that want to go fast and test their early season fitness.

Bike Course: Sprint (12 miles)


Athletes will exit the transition area heading onto the Cub Run trail system for a flat out and back 5km run.  Athletes will finish back at Cub Run RECenter and celebrate down the finish chute.  Kids and families are encouraged to celebrate their athlete’s finish by running down the finish chute together.

Run Course: Sprint (3.1 miles)



Our 2020 Beneficiaries:


2021 Westfields Tri Sponsorships

2021 WestfieldsTri_Flier W_Sponsor



Rev3 loves our volunteers! Not only will you have a front-row seat to a world-class event, but you will have fun and also be inspired.


We welcome all ages! Volunteers under 16 need a parent or guardian to sign them up and volunteers under 14 must have an adult accompanying them during their volunteer shift. Please note, some duties may not be appropriate for volunteers under 16. Each volunteer must register individually. If you have a youth who wants to volunteer please email for help finding the right volunteer duty.


As our way of saying “Thank you for all you do! You are valuable to us!” we will offer to you:

  • Official Rev3 Volunteer shirt
  • Discount code for future Rev3 Race
  • Light snacks and water during your shift
  • As available, offers from our sponsors
  • As available, offers from local restaurants & retailers


Are you part of a team, group, club or organization that wants to do some fundraising? Rev3’s Volunteer Donation Program allows qualifying groups to earn a donation for their volunteer efforts. If you are interested in more information please email