NEW HALF MARATHON

5K, 10K, Youth, Virtual

May 11th, 2025

Spokane, WA​

​

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

​

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

October 19th, 2025

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

5K, 10K Half, Youth, Virtual

March 8th, 2025

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. 8th, 2025

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.

Swim Clinics, Tri & Du Clinic

July 2025 - Swim Clinic #1
Aug. 2025 - Swim Clinic #2
Sept 2025 - Tri & Du Clinic

​

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

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

October 4th, 2025

Capitola, CA

​

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

 ** 2024 LEADERBOARD **

January 2025

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?

​

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​