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Online registration is closed.

Race day registration will be available. Race day fees (Duathlon $220, Relay $250, Swim-Only $160)


Prepare yourself for the 35th Annual Alcatraz “Escape from the Rock” Duathlon. The course combines the original swim from Alcatraz with an 7 mile run to Fort Point and back to Aquatic Park. You have heard the stories, you’ve seen the movies, you know the infamous inmates, but NOW it’s your turn to make history on the ESCAPE course! As the tourists ferry to the island, you’ll be swimming away as you make the ULTIMATE ESCAPE! The event is limited to 500 participants, so don’t wait to register!

Registration fees

Individual Closed

Registration closed
  • Duathlon: Swim & Run

    1. Closed
      Aug 27 – Feb 28
    2. $200.00
      Mar 1 – Aug 19

Relay Team Closed

Registration closed
  • 2-Person Relay Team

    1. Closed
      Aug 27 – Feb 28
    2. $225.00
      Mar 1 – Aug 19

Swim-Only Closed

Registration closed
  • Swim Only

    1. Closed
      Aug 27 – Feb 28
    2. $150.00
      Mar 1 – Aug 19

Course Map

DISTANCE: Swim 1.5 Miles, Run 7 Miles

COURSE CUT-OFF TIME3.5 HOURS (The swim must be completed within 75 minutes).

Additional Details

WATER TEMP: ~58-62° F

AID STATIONS: There will be aid stations at miles 2, 3.5 and 5. Aid will also be available in the transition area.

INCENTIVES: Technical shirts for all participants. Medals for all duathlon participants. Personalized award plaques to top three individual duathlete finishers in each age group, first place overall Clydesdale & Athena finishers, first place relay team in each division (male, female, co-ed), first place swim only finishers in each age group.

RACE PACKETS: (containing swim cap, run bib number, timing chip, & t-shirt) are picked up on race day morning in the Senior Center which is located on the first floor of the Maritime Museum. Full details on this pick-up will be e-mailed to all paid participants and posted on this web page approximately two weeks prior to race day. If you did not submit a valid e-mail address when registering for this event, please notify us at

PARKING: Parking is sparse in the Aquatic Park area. We recommend that athletes park at the Ft. Mason lot ($10 all day), the entrance is located at the intersection at Marina Blvd. and Buchanan St.. Just walk along one of the footpaths through Ft. Mason and over the hill to Aquatic Park. (Click here for a Google map location of Fort Mason.)

DRIVING DIRECTIONS: Google Maps Link to start/finish area.

CANCELLATIONS: Registrations are non-refundable and non-transferable. If you email us by July 22, you may receive a rollover credit (the amount you paid minus a $35 fee) to use toward any future Enviro-Sports race.

HEADPHONES POLICY: Headphones (or any other audio device, swimp3 players, etc.) are NOT allowed during either leg of this event.

ENTRANT EMAIL: View the entrant email with all the race day details online here.

Travel & Accommodation

Argonaut Hotel (Event HQ Hotel) 866-415-0704
495 Jefferson St.
San Francisco, CA 94109

Tuscan Inn (Fisherman's Wharf) 415-292-4535
425 Northpoint St.
San Francisco, CA 94133

San Francisco International Airport

Wetsuit Rentals

XTERRA WETSUITS is an official wetsuit and wetsuit rental sponsor for the 2015 Enviro-Sports Sharkfest® Swim Series. As part of our partnership, race participants receive exclusive discounts on the XTERRA WETSUITS product line, ranging from 30-55% off Vortex Sleeveless & Fullsuit, Vector Pro Sleeveless & Fullsuits, and Velocity M Speedsuit triathlon wetsuits, and have the opportunity to win XTERRA WETSUITS at the race. Visit and use coupon code R-ENV to purchase or rent the best selling triathlon wetsuit in North America! FIT2RACE wetsuits are designed for the sole purpose of performance swimming. An open water-specific wetsuit can improve your overall swim performance. The rental cost is $45 and this amount may be applied towards the purchase of a new F2R wetsuit. To find out more about an F2R wetsuit rental, click here and choose “Rentals” (not “Wetsuits”). SPORTS BASEMENT (Northern California events) rents Blue Seventy Reaction wetsuits, an entry level suit great for getting accustomed to swimming in open waters. They do not recommend using the wetsuit in chlorinated water. Wetsuit rentals are available at all of their store locations. The rental cost is $25 for 1 week or $50 for 1 month, and up to $150 in rental fees may be applied towards the purchase of a new wetsuit within 90 days of your first rental of the current season. Proof of rental payment required. To find out more about a SPORTS BASEMENT wetsuit rental, click here.

Event Partners


Event Schedule

  • August 22 4:30 AM PDT - Athlete Check-in and Transition Set-up.

  • August 22 5:30 AM PDT - Pre-race Announcements

  • August 22 5:40 AM PDT - Athletes Parade to the Ferry

  • August 22 6:20 AM PDT - Ferry Departs from Pier 41

  • August 22 7:00 AM PDT - Race Starts (approximately at this time)

  • August 22 10:00 AM PDT - Age Group Winners Announced

Contact Information

Event Location

Alcatraz Island, San Francisco, CA

Click here to view map