Sun May 16, 2021 Directions


8:00AM PDT
Events: Sprint Triathlon Olympic Triathlon
Grab a partner!


8:00AM PDT
Events: Sprint Triathlon Relay Olympic Triathlon Relay

5K & 10K

8:00AM PDT
Events: 5k 10k
Under 18/70+ only $65

Sprint 2 Sport

8:00AM - 8:15AM PDT
Events: Sprint Aquabike Sprint Aquathon Sprint Duathlon
Under 18/70+ only $65

Olympic 2 Sport

8:00AM PDT
Events: Olympic Aquabike Olympic Aquathon

Purchase your race photos here!

We pay the photographer so you don't have to ... download them from Ploen Photo for FREE!

**Photos are for personal use by athletes. Contact Ploen Photo for other uses.**
Water Conditions

The water level at Millerton is very low so there will be a longer than normal walk from the water to transition, approximately 900 feet.

Water temperature 5/14 8am was 70F. Race morning is expected to be wetsuit legal.

Millerton Lake Boat Ramp-Madera Side
Meadow Campground
Friant, CA 93626

Update 05/10/2021: The COVID-19 SAFETY MEASURES are updated to reflect the current guidelines and requirements. Please review prior to race day. We will be limiting the event to stay below the requirement for testing and vaccination.

What will you find at the "Crows Nest" Triathlon?

+ Finisher's Medal
+ Prizes and Giveaways
+ Free Race Photos
+ Get an Event T-Shirt included in the price of the triathlon

The Millerton Lake Sprint Triathlon has long been known as a great "first lake swim" triathlon, and a warm up for the upcoming season. But don't let the bike and run distances fool you, there are a few steep hills on the ride, and the trail portion of run is a challenge.

More of a good thing... The Olympic Distance has a more challenging swim, two loops of the bike course, and two loops of the run course with a trail run heading out, a paved road coming back and beautiful Millerton Lake as the backdrop.


A USAT membership is required for the Triathlon, (but not the 5k/10k)  If you do not have one, you can purchase one during the registration process.  Per USAT rules, multisport participants must present ID and USAT membership card at packet pickup.

Total participation at this event is capped at 200.  Register before it is sold out.

There is a $10 vehicle entrance fee.  

Athlete Guide

Updated guide coming soon



Triathlon- 800yd swim, 10.5mi bike, 3.1mi run
Aquabike- 800yd swim, 10.5mi bike 
Duathlon- 3.1mi run, 10.5mi bike, 3.1mi run 


Triathlon- 1600yd swim, 21mi bike, 6.2mi run 
Aquabike- 1600yd swim, 21mi bike 

Run/Walk Only

5K Run/Walk 
10K Run/Walk


A nice addition to your medal wall... the 4" Crow's Nest 2021 spinner medal! 

Millerton Lake Triathlon Video

Your safety is our highest concern at the race.  

  • 6+ Kayaks/Paddleboards/Lifeguards in the water.
  • CHP Providing traffic control and awareness at entrance to park.
  • Pistoresi Ambulance On Site

6:00am - 8:00am Race day Packet pickup
6:00am - 6:40am Transition Open for Olympic Athletes
6:40am - 7:15am Transition Open for Sprint Athletes 
7:00am Olympic Triathlon Begins
7:45am Sprint Triathlon, Aquabike, and Aquathlon Begins 
8:00am Duathlon Duathlon Begins (Starts at Finish Line)
8:05am 5k & 10k Run Begins (Starts at Finish Line) 

Packet Pickup


Drive through Friday before race day @ 4:30-6:30
Break the Barriers
8555 N Cedar Ave
Fresno, CA 93720



Sunday (race day) @ 6:30am-7:30am
Millerton Lake Boat Ramp-Madera Side
Meadow Camp Ground
Friant, Ca 93626
Click for map 

New COVID-19 Safety Measures

Your safety is our highest priority. We have included USAT, CDC, and health department recommendations in plans to safely return to racing. 
Pre-Race Screening

  • The pre race screen questionnaire is available under the "SELF-EVALUATION QUESTIONNAIRE". These will not be collected.

Packet Pickup and Registration

  • There will be no in person or paper registration. Online registration will remain open until race start or the event is sold out.
  • Early packet pickup will be drive up.

Race Day

  • Masks will be required before and after the race. Masks will not be required during the event.
  • A disposable face mask will be provided in the race packet and trash cans placed at the start line so that athletes can remove mask at start of the race. Disposable face masks will also be available at transition for before and after the race.
  • Race briefing will be pre-recorded and played at key areas such as transition and race start.
  • Bike racks will be spaced with 6 feet between bike racks.
  • Racks will be marked for two Sprint and two Olympic athletes per rack
  • Race will be a rolling time trial with chipped swim start
  • Run will be a time trial start with at least 10 second spacing. Starting time will be recorded as athletes cross the start. 
  • While aid stations will be provided, athletes are encouraged to bring their own water to limit contact
  • Race tattoos will be provided in race packets and should be applied prior to arriving at the race venue.
  • Virtual awards ceremony and mailed awards
  • Post race food will be pre-packaged for the athlete to take to go

Refund Policy Update

  • If an athlete has a fever, suspects Covid symptoms, or is concerned about racing at this time they can defer or transfer their registration to another race. 

Volunteers get a meal, t-shirt, and choice of

  • 100% off a 5k or 10k run hosted by Activitynut
  • 50% off of a multisport event hosted by Activitynut
  • $30 off of next year's season pass

Non-Profit 501(c)3

This event is hosted by the Activitynut Foundation, Inc.; a non-profit 501(c)3 who's mission is to connect athletes with local events, clubs, coaching and local stores. We maintain a race calendar listing local events at

Join Activitynut Club (free membership), and get 15% off of this and other events hosted by Activitynut.


Sunday Event Parking: Be prepared to have a parking pass or $10 cash at the event.

Volunteer Parking: Volunteers that do not have a parking pass,  we will pay for your parking on Sunday morning.  Carpool if you can, there is no free parking. We will have to pay for each volunteer vehicle that parks.

Race Contact Info

If you have any questions about this race, click the button below.


Millerton Lake Boat Ramp-Madera Side
Meadow Campground
Friant, CA 93626

Race Participant Survey

Please complete the following survey to help us better understand your race experience.

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