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Tickets $15–$60

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Distances in this event

  1. Sirena 9 Mile

    Run 9mi
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  2. 6 Mile

    Run 6mi
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  3. 3 Mile

    Run 3mi
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  4. Mermaid Dash

    Run 1mi
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T9 Mermaid Run Woodside routes

Some of the hills you can run, some you'll hike and some you'll just be thinking what goes up must go down. We do think you will enjoy the beauty this course has to offer.

The Mermaid Trail run is a great way to keep yourself motivated and active during the winter months. In the spirit of trail running and enjoying the beauty of the outdoors, the run is centered around fun and spending time with fellow Mermaids out on the trail. Our third year at Huddart Park, this run boasts of serene and peaceful trails, heavy canopy, oak trees, lichen, banana slugs, deer, steep hills and a finish line party to celebrate your run. Hiking and walking are perfectly acceptable. We want you to find your happy pace.


The Mermaid Dash is a great way to introduce girls to trail running. The fun run/walk/hike allows girls to participate and experience the joy of crossing the finish line in a safe and supportive environment. Mermaid Dashers receive a medal and post race food.

Parents are encouraged to let Mermaid Dashers run/hike on their own, however a parent or guardian is welcome to run alongside young or shy Mermaid Dashers.

Event details

  • Trails
  • Hilly
  • Finisher’s t-shirt
  • Finisher’s medal
  • 350 participants

From the organizer

Stay in shape and get a little muddy this winter as we head for the rolling hills and single track trails in San Mateo County. Join us for a fun run/hike/walk at Huddart Park in beautiful Woodside, CA. If single track, tree covered trails with hills and some banana slugs are your idea of a fun Saturday morning.... the Mermaid Trail Run WILL put a smile on your face.

What’s Included

All mermaids will receive a finisher medal, finisher necklace, and post race food.

Raceday Logistics

Packet Pickup - Registration
What do I need to bring to packet pick-up/registration?

Bring your PHOTO IDENTIFICATION (ID) or a copy of your ID in order to receive your packet. A valid driver’s license or a valid passport is best. Minors are not required to show a photo ID.

What time should we be there on race day?
Packet pick up opens at 8:00 a.m. We recommend you get there at that time to get your packet and get ready for the race.


8:30 am - Mermaid Dash
9:00 am - Sirena 9 mile
9:15 am - 6 mile
9:30 am - 3 mile


Is there is a time limit?
There is no cut-off for the 3 mile and 6 mile run. For the Sirena 9 mile run, you will need to keep a 25 min/mile pace.

We will need you to hit the third aid station (Summit and Skyline Trails) by 11: 30 am in order to continue.

Do you have aid stations? What kind of liquid/food is on the race course?
Yes, we have plenty of aid stations. Water, Ultima Replenisher electrolyte drink, and Luna bars are available at aid stations along the course. We strongly suggest that you carry at least 20 OZs of water at all times.

Can I run with a baby stroller?
Unfortunately, the trails are NOT suitable for baby strollers.

T9 Mermaid Run Woodside weather forecast

Mostly cloudy throughout the day.

Predicted highs
Predicted lows
IconLight breeze possible, up to 5mph

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