Skip to main content

Online registration is closed.

Race day registration will be available at these prices: $100 (Adult) $40 (Youth). You can read the race day details online here.

Sharks in Boston Harbor? Bostonians call them “Shaaahks”! Imagine swimming across Boston Harbor from Piers Park Sailing Center in east Boston to the swim finish at the John Joseph Moakley US Federal Courthouse at Fan Pier in South Boston. You can do this! We are thrilled to bring our popular open water swim series to Boston. The 1500 meter competitive swim will have downtown Boston for a backdrop as athletes navigate across the channel to a thrilling finish. The Coast Guard will stop all boat traffic in and out of the channel during this event. Water taxis will transport swimmers from the finish line to the start of the swim. The event is limited to 800 participants - so don't wait too long to register! This will be the talk of the New England swim circuit.

Check out a video from the 2nd Annual event! 

PLEASE NOTE: This swim is not for novices. This event is for experienced open-water swimmers only. You should be able to swim one mile comfortably in a pool in under 40 minutes. Also the water quality in Boston's inner harbor is safe for swimming. The City of Boston and other agencies test the water on a regular basis. We take water quality issues very seriously and we will ensure the water is safe for swimming and the event. 

Registration fees

Adult Closed

(18 & Over)

    1. $70.00
      Sep 24 - Jan 31
    2. $80.00
      Feb 1 - Aug 31
    3. $90.00
      Sep 1 - Sep 15
    4. $100.00
      Sep 16 - Sep 16

Youth Closed

(17 & Under)

    1. $35.00
      Sep 24 - Sep 15
    2. $40.00
      Sep 16 - Sep 16

Travel & Accommodations

Envoy Hotel 844-840-1846, 70 Sleeper St., Boston, MA 02210 (Across the Street from Race Check-In/Finish)

Reservations may be made by phone (844-840-1846) or online here by 8/17/16. Mention "ENVIRO-SPORTS" for discount rates (valid 9/16/16 & 9/17/16): Classic King: $399 

Course Map

DISTANCE: 1500 Meters

Event Details




INCENTIVES: T-Shirts for all participants. Sharkfest Swim Medals for top three finishers in each age group, in each division (wetsuit & non-wetsuit). Personalized award plaques will also be mailed to the first place finishers in each age group, in each division (wetsuit & non-wetsuit).

AGE GROUP BREAKDOWN: Male and Female: 5-6, 7-8, 9-10, 11-12, 13-14, 15-17, 18-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75-79, 80-84, 85-89, 90-94, 95-100!

RACE DAY DETAILS: An email with all the race day details will be sent to all registered participants and posted online here 1-2 weeks prior to event day. Please check back for any updates and the full race day itinerary.

PARKING: Parking available for $15 (for 10 hours) in an underground parking garage at 11 Fan Pier under Babbo Pizzeria (entrances to parking garages are at located on Liberty Drive and Bond Drive). This is just a couple blocks from the swim finish where swimmers will catch the water taxis to the swim start.  Swimmers are required to either take the water taxi or public transit (Piers Park is 4 blocks from the Maverick T-stop on the Blue Line) to the swim start. There is NO PARKING at the swim start.

CANCELLATIONS:  Registrations are non-refundable. If you can no longer participate in this event, you may receive a rollover credit (minus a $20 processing fee) toward a future event as long as you let us know by August 17 2016. After that date, a doctor's note is required to receive a credit.


GEAR TRANSPORT: You will leave most of your gear with us at a bag check by the swim finish. Anything you want to bring with you to the swim starts, you put in a plastic bag (which you can pick up at the bag check) marked with your bib number and we will transport it from the swim start to the swim finish where you can retrieve when you finish the race.

Event Partners

(Beneficiary - Adaptive Sailing)






Event Schedule

  • September 17 9:30 AM EDT - Athlete Check-in

  • September 17 10:00 AM EDT - Catch Water Taxi to Race Start

  • September 17 11:30 AM EDT - Race Starts

Contact Information

Event Location

John Joseph Moakley United States Courthouse, Courthouse Way, Boston, MA, United States

Click here to view map