5K, 10K Half, Youth, Virtual

March 14th, 2026

San Diego, CA​

 

The flat course is a mix of road and paved running path around Mission Bay. Soak in the views and the sun!

​​​

 3 mile, 6 mile, 9 mile, Half Marathon,

Sirena 6 Hour, Youth, Virtual

Saturday, Nov. 7th, 2026

Huddart Park, Woodside, CA

​

Join us for our annual Tails & Trails! Hike, jog or run through the magical forest and towering redwoods at Huddart Park in Woodside, CA.

Sprint Tri & Du, Super Sprint Tri, Aquabike, Virtual

October 3rd, 2026 

Capitola, CA

​

The longest running women's triathlon in California! The Super Sprint Triathlon is great distance for new athletes looking to do their first triathlon. 

5K, 10K, Half, Youth, Virtual

NO 2025 EVENT
Mare Island - Vallejo, CA​

The 2025 spring event is on hold. We are hoping to bring back a spring run in 2026​

5K, 10K, 10 Mile, Youth, Virtual

April 12th, 2026

Crissy Field, San Francisco
 

Run along the San Francisco Bay and soak in views of the Alcatraz and the Golden Gate. The Sirena10 Mile Run crosses the Golden Gate Bridge!

​

 ** VIRTUAL LEADERBOARD **

July 1st to October 9th

​

Virtual Walk/Run: 200 miles
Virtual Walk/Run: 105 miles​

Bike: 600 mile Challenge
Row/Paddle: 200 mile Challenge

Swim: 40 mile Challenge

Swim Clinics, Tri & Du Clinic

June 22nd - Swim Clinic #1
July 26th - Swim Clinic #2
Aug. 9th - Swim Clinic #3
Sept 21st - Tri & Du Clinic
 

Practice makes perfect! Learn all the tips and tricks to make your Tri or Du a fun and successful experience.

 ** 2026 LEADERBOARD **

January 2026

VIRTUAL - 31 Day Streak Challenge

​

How many days can you STREAK together? Commit to exercise for 30 mins a day or 60 mins a day. Can you streak together ALL 31 days?

​

STEP CHALLENGE LEADERBOARD

April 2026

VIRTUAL​

​

Earn digital badges and get in as many steps as you can during the month of April. Each day there's a new badge to earn and a new step goal.

​

Half, 10K, 5K, Youth, Virtual

2026 TBD

Spokane, WA​

​

Celebrate Mother's Day with a fun run, walk or jog along Riverfront Park, the Spokane River and the Centennial Trail. ​