Saturday, November 8th, 2025
3 Mile, 6 Mile, 9 Mile, Half Marathon, 6 Hour Challenge (Individual & Relay),
Kids 1.5 Mile Dash & Virtual Run
Run, hike or walk at Huddart Park in beautiful Woodside, CA. Towering redwoods, lush trails and the magical forest await....
Sign up to get ALL the swag or you can customize your SWAG options during registration. Removing swag can save you up to $14. We are now offering the option to choose either a long or short sleeve shirt with your registration!
*Note: Opting out of the various swag items during your registration will reduce your entry fee at checkout.
Select: No Shirt - Save $8
Select: No Medal - Save $3
Select: No Necklace - Save $3
**Sirena 6 Hour Individual & Relay**
We're excited to continue the SIRENA 6 Hour again this year! Participants in the Sirena 6 Hour will challenge themselves to run or hike as many 3 Mile loops as they can within the 6 hour time limit. Challenge yourself as an Individual or part of a 2 Person Relay Team. Participants will have access to a designated crew/drop bag area along the finish chute and will also have access to a special 6 Hour Aid Station stocked with all the fun food and snacks needed to fuel for 6 hours of fun! We're talking pancakes, quesadillas, melons, and more.
Age Discounts:
*Age discounts automatically applied during registration
Registration fees
Prices are inclusive of mandatory charges, items, and fees
6 Hour Challenge (Individual)
Price changes in 1 month 2 days-
Participants will have the challenge of seeing how far they can go in the 6 hour time limit. The course will be loops of the 3 mile distance.
-
$49.07
Breakdown: $44.00 registration + $5.07 processing fee
May 21 – May 23 -
Register for 6 Hour Challenge (Individual)$91.86
Breakdown: $84.00 registration + processing fee
Now registering May 24 – Jun 30 -
$97.21
Breakdown: $89.00 registration + processing fee
Jul 1 – Sep 30 -
$102.56
Breakdown: $94.00 registration + processing fee
Oct 1 – Oct 31 -
$107.91
Breakdown: $99.00 registration + processing fee
Nov 1 – Nov 6 -
$118.61
Breakdown: $109.00 registration + processing fee
Nov 7 – Nov 8
-
6 Hour Challenge (2 Person RELAY - Price per person)
Price changes in 1 month 2 days-
Your team of 2 will take turns running as many loops of the 3 mile course as you can in 6 hours.
-
$49.07
Breakdown: $44.00 registration + $5.07 processing fee
May 21 – May 23 -
Register for 6 Hour Challenge (2 Person RELAY - Price per person)$59.76
Breakdown: $54.00 registration + $5.76 processing fee
Now registering May 24 – Jun 30 -
$65.11
Breakdown: $59.00 registration + $6.46 processing fee
Jul 1 – Sep 30 -
$70.46
Breakdown: $64.00 registration + $6.46 processing fee
Oct 1 – Oct 31 -
$75.81
Breakdown: $69.00 registration + $6.81 processing fee
Nov 1 – Nov 6 -
$91.86
Breakdown: $84.00 registration + $7.86 processing fee
Nov 7 – Nov 8
-
Half Marathon
Price changes in 1 month 2 days-
-
$49.07
Breakdown: $44.00 registration + $5.07 processing fee
May 21 – May 23 -
Register for Half Marathon$81.16
Breakdown: $74.00 registration + $7.16 processing fee
Now registering May 24 – Jun 30 -
$86.51
Breakdown: $79.00 registration + $7.51 processing fee
Jul 1 – Sep 30 -
$91.86
Breakdown: $84.00 registration + $7.86 processing fee
Oct 1 – Oct 31 -
$97.21
Breakdown: $89.00 registration + processing fee
Nov 1 – Nov 6 -
$107.91
Breakdown: $99.00 registration + processing fee
Nov 7 – Nov 8
-
9 Mile
Price changes in 1 month 2 days-
-
$49.07
Breakdown: $44.00 registration + $5.07 processing fee
May 21 – May 23 -
Register for 9 Mile$70.46
Breakdown: $64.00 registration + $6.46 processing fee
Now registering May 24 – Jun 30 -
$75.81
Breakdown: $69.00 registration + $6.81 processing fee
Jul 1 – Sep 30 -
$81.16
Breakdown: $74.00 registration + $7.16 processing fee
Oct 1 – Oct 31 -
$86.51
Breakdown: $79.00 registration + $7.51 processing fee
Nov 1 – Nov 6 -
$97.21
Breakdown: $89.00 registration + processing fee
Nov 7 – Nov 8
-
6 Miles
Price changes in 1 month 2 days-
-
$49.07
Breakdown: $44.00 registration + $5.07 processing fee
May 21 – May 23 -
Register for 6 Miles$59.76
Breakdown: $54.00 registration + $5.76 processing fee
Now registering May 24 – Jun 30 -
$65.11
Breakdown: $59.00 registration + $6.11 processing fee
Jul 1 – Sep 30 -
$70.46
Breakdown: $64.00 registration + $6.46 processing fee
Oct 1 – Oct 31 -
$75.81
Breakdown: $69.00 registration + $6.81 processing fee
Nov 1 – Nov 6 -
$86.51
Breakdown: $79.00 registration + $7.51 processing fee
Nov 7 – Nov 8
-
3 Miles
Price changes in 1 month 2 days-
-
$49.07
Breakdown: $44.00 registration + $5.07 processing fee
May 21 – May 23 -
Register for 3 Miles$49.07
Breakdown: $44.00 registration + $5.07 processing fee
Now registering May 24 – Jun 30 -
$54.42
Breakdown: $49.00 registration + $5.42 processing fee
Jul 1 – Sep 30 -
$59.76
Breakdown: $54.00 registration + $5.76 processing fee
Oct 1 – Oct 31 -
$65.11
Breakdown: $59.00 registration + $6.11 processing fee
Nov 1 – Nov 6 -
$75.81
Breakdown: $69.00 registration + $6.81 processing fee
Nov 7 – Nov 8
-
Virtual Run
Price changes in 1 month 2 days-
-
$49.07
Breakdown: $44.00 registration + $5.07 processing fee
May 21 – May 23 -
Register for Virtual Run$49.07
Breakdown: $44.00 registration + $5.07 processing fee
Now registering May 24 – Jun 30 -
$54.42
Breakdown: $49.00 registration + $5.42 processing fee
Jul 1 – Sep 30 -
$59.76
Breakdown: $54.00 registration + $5.76 processing fee
Oct 1 – Oct 31 -
$65.11
Breakdown: $59.00 registration + $6.11 processing fee
Nov 1 – Nov 6 -
$75.81
Breakdown: $69.00 registration + $6.81 processing fee
Nov 7 – Nov 8
-
Mermaid Dash
Price changes in 1 month 2 days-
Mermaid Dash for girls and boys under 12 years old. Entry fee does NOT include a t-shirt.
-
$18.04
Breakdown: $15.00 registration + $3.04 processing fee
May 21 – May 23 -
Register for Mermaid Dash$18.04
Breakdown: $15.00 registration + $3.04 processing fee
Now registering May 24 – Jun 30 -
$18.04
Breakdown: $15.00 registration + $3.04 processing fee
Jul 1 – Sep 30 -
$18.04
Breakdown: $15.00 registration + $3.04 processing fee
Oct 1 – Oct 31 -
$18.04
Breakdown: $15.00 registration + $3.04 processing fee
Nov 1 – Nov 6 -
$23.39
Breakdown: $20.00 registration + processing fee
Nov 7 – Nov 8
-
PACKET PICKUP
Saturday, November 8th, 2025 (RACE-DAY) packet pickup:
Location: Huddart Park, 1100 Kings Mountain Road, Woodside, CA
Time: 8:00 a.m. to 9:45 a.m.
You must have a photo i.d. in order to pick up your packet
MERMAID DASH
Mermaid Dash
The Mermaid Dash is a great way to introduce girls and boys to trail running. The fun run/walk/hike allows youth to participate and experience the joy of crossing the finish line in a safe and supportive environment. Mermaid Dash athletes receive a finisher's medal, finisher's necklace, and post race food.
Parents are encouraged to let Mermaid Dash athletes run/hike on their own, however a parent or guardian is welcome to run alongside young or shy Mermaid Dash athletes.
Time: 11:00 a.m. (Ages 6 - 12)
Entry Fee: $15.00** (online)
Race Day: $20.00**
Distance: 1 mile
*Entry fee does NOT include a t-shirt.
PARKING
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.
PLEASE BRING $6 CASH (EXACT CHANGE APPRECIATED)
Event schedule
- Sat, November 8, 2025 8:30 AM - Sirena 6 Hour
- Sat, November 8, 2025 8:45 AM - Half Marathon
- Sat, November 8, 2025 8:55 AM - 9 mile
- Sat, November 8, 2025 9:10 AM - 6 mile
- Sat, November 8, 2025 9:20 AM - 3 mile
- Sat, November 8, 2025 10:30 AM - Mermaid Dash (ages 6-12)
Contact information
- Event contact
- Mermaid Series
- info@mermaidseries.com
- Website
- Visit website
