Sun April 23, 2023 Directions


$140 - $150
$130 - $140 8:00AM PDT
Events: Sprint Triathlon Olympic Triathlon
Grab a partner!


$240 - $250
$190 - $210 8:00AM PDT
Events: Sprint Triathlon Relay Olympic Triathlon Relay
Under 18/70+ only $65

Sprint 2 Sport

$130 8:00AM - 8:15AM PDT
Events: Sprint Aquabike Sprint Aquathon Sprint Duathlon
Under 18/70+ only $65

Olympic 2 Sport

$140 8:00AM PDT
Events: Olympic Aquabike Olympic Aquathon

5K & 10K

$40 8:00AM PDT
Events: 5k 10k


$250 - $1,000 7:00AM PDT
Events: Sponsorship- Bronze Sponsorship- Silver Sponsorship- Gold Sponsorship- Platinum

Virtual Triathlon

$40 Registration ends April 23, 2023 at 11:59pm PDT

Virtual 5k

$40 Registration ends April 23, 2023 at 11:59pm PDT

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

This section will be updated closer to race day.

Water temperature is expected to be in the 60's

Race morning is expected to be wetsuit legal.

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

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

2022 Athlete Guide Updated 3/28/2022

2023 coming soon.


Click the icon below to download the attached PDF.



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

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 - 6:45am Transition Open for Olympic Athletes
6:00am - 7:15am Transition Open for Sprint Athletes 
6:50am Olympic Athlete Meeting at the Dock
7:00am Olympic Triathlon Begins
7:35am Sprint Triathlon, Aquabike, and Aquathlon Athlete Meeting at the Dock 
7:45am Sprint Triathlon, Aquabike, and Aquathlon Begins 
8:00am Duathlon Begins (Starts at Finish Line)
8:05am 5k & 10k Run Begins (Starts at Finish Line)

Packet Pickup


Drive through Friday before race day @ 4:00-6:30
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 


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

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