top of page


January 2024

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, 10 Mile, Youth, Virtual

Saturday, May 18th

Spokane, WA


Head out from Riverfront Park and onto the Centennial Trail for a scenic run along the Spokane River. 


 Postponed to 2024

October 5th, 2024

Capitola, CA

The Capitola Wharf will be undergoing repairs in October due to storm damage earlier this year. The repairs will impact the beach access for the swim start. The event will return in 2024 

Event Details

5K, 10K Half, Youth, Virtual

Saturday, February 24th

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!


October 1st - 31st

Sprint, Olympic, Half Iron Tri, Long Course Du, Aquabike, Paddle/Row Tri

The Mermaid Virtual Tri & Du lets you complete a Tri or Du in your home town!

Note: The 2023 Virtual Tri & Du will replace the 2023 Capitola Tri & Du. The wharf will be undergoing repairs in October which will limit our access to the swim start on the beach.

The in-person Tri & Du will return in 2024


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

September 22nd, 2024

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!


5K, 10K, Half, Youth, Virtual

Saturday, May 11th

Mare Island - Vallejo, CA

Start and finish along the historic Mare Island waterfront. After the race enjoy the cool breeze and hang out at the Mare Island Brewery.



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


 3 mile , 6 mile, 9 mile, Half Marathon, Youth, Virtual, *NEW* Sirena 6 Hour

Saturday, Nov. 9th, 2024

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.

bottom of page