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.

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 fourth 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.

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


Parking at Huddart Park is limited.  We encourage all participants to carpool to the event. NOTE: THERE IS NO PARKING ON KINGS MOUNTAIN ROAD OR ALONG THE ENTRANCE TO THE PARK BEFORE THE RANGER'S HUT.

Parking Map (coming soon)


9:00 a.m. - Half Marathon
9:15 a.m. - 9 mile
9:30 a.m. - 6 mile

9:45 a.m. - 3 mile
10:30 a.m. - Mermaid Dash

Half Marathon - [maps coming soon]
9 mile - [map] [strava] [pdf]
6 mile - [map] [pdf]
3 mile - [map] [pdf]
mermaid dash - [map] [pdf]

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.


Mermaid Dash Details

Time: 10:30 a.m. (Ages 6 - 12)
Entry Fee: $15.00** (online) 
Race Day: $20.00** (race day)
Distance: 1 mile 

*Entry fee does NOT include a t-shirt. 


Can't attend one of our events? 
We will be happy to issue you a credit good for your entry fee minus a $10 processing fee. The credit is good towards a future Mermaid Series event. To receive a credit, you must email us at info@mermaidseries.com a minimum of 10 days before the event date. We will email you back a confirmation along with the total amount of your future race credit. Please keep the confirmation email for your records. Credits are nontransferable.


Saturday RACE-DAY packet pickup : 
Location: Almaden Quicksilver Park
Time: 7:00 to 8:30 a.m.
You must have a photo i.d. in order to pick up your packet


12/1 - 12/7 *Registration closes at 23:59pm

5K: $35

10K: $45
Half: $55


Before 12/1
3mi: $30

6mi: $40
9mi: $50


Race Day - IF NOT SOLD OUT*cash or check ONLY
3mi: $40
6mi: $50
9mi: $60


Mermaid Dash girls run
Online - $10
Race Day (cash or check ONLY) - $15

*Entry fee does NOT include a t-shirt. 


There is limited parking at the venue in Almaden Quicksilver Park. We encourage all participants to carpool to the event. There are approximately 100 parking spaces at the top of Mocking Bird Hill Lane inside the park. Once the parking lot is full we will be directing cars to park within the surrounding neighborhood. NOTE: THERE IS NO PARKING ON MOCKING BIRD HILL LANE. Please respect the neighbors and neighborhood when parking. Please keep your noise level to a minimum and make sure to leave no trash. 

Parking Map

Google Directions



Is the course hilly?

YES! There are some big hills, but without the hills you wouldn't get the scenic views.... Enjoy them, embrace them, curse them, but rest assured they'll be on the course. There are some steep hills so plan on hiking or walking the big ones and then you enjoy the wind in your hair as you blaze downhill. 

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'll need to keep a 25 min/mile pace. The cut-off will be at the third water station which is located near mile 4. You must reach the water station NO LATER than 9:45 am 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.    


Can I run with a baby stroller?

Unfortunately, the trails are NOT suitable for baby strollers. 


Do you have prizes for winners?
Yes! We will have an awards ceremony at the expo. Awards are given to the 1st, 2nd, and 3rd place overall winners for each distance and 1st, 2nd, and 3rd place winners of each age group. Age groups are based in 10 year increments. You must be present at the awards ceremony to pick up your award.  Awards will not be mailed out.


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 7:00 a.m. We recommend you get there at that time to get your packet and get ready for the race.

How soon does one need to register for the event?
The earlier, the better. Plus, the prices increase as the event date gets closer.


If the event closes, will there be a waiting list?



If I cannot race, can I give someone else my race number?

No. Race entries are non-transferable.  


How do I know you received my entry?

You should have received an email confirmation from our registration system. If you can’t find it, you can email us at info@mermaidseries.com. We will verify your participation from our registration list.

Can I get a refund?

Unfortunately, there are no refunds. However, we do have an awesome cancelation policy. Email us at info@mermaidseries.com at least 10 days prior to the event and we’ll give you a credit toward a future race. The credit amount is your entry fee minus a $10 processing fee.




I belong to a club or organization. Do you offer group discounts?
Yes! Have your club president or representative email us at info@mermaidseries.com to get the discount code.


How many do I need in my group to be eligible for a group discount code?
6 or more.



Are men allowed to compete in a Mermaid event?
Yes! Men can register and participate. However, since Mermaid is primarily a women’s event (about 97-98% of participants are women), men are not eligible for awards.

Do I have to wear my paper, race number?

Yes, you are required to run with your bib number. This is used for timing, identification, and race photos. 

I heard this event uses Chip Timing. What is Chip Timing?
Chip timing allows us to record your time using a computer and gives the most accurate results. Your timing chip is attached to your bib.


2016 - Full Results


Photos will be available approximately one to two weeks following the event.

2016 photos

Event photography by: Facchino Photography specializes in off-road event photography. Capturing athletes in their moment and allowing them flexibility in viewing and ordering convenience.

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