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Women's Half Marathon San Diego 2026

5k, 10k, Half Marathon, Virtual Run, Mermaid Dash

Women's Half Marathon San Diego
Presented By: Mermaid Series

Saturday, March 14th, 2026
5k, 10k, Half Marathon, Mermaid Dash, Virtual Run

Women's 5k, 10k, Half Marathon and Virtual Run
Ideal course for both walkers and runners! The flat and fast course features beautiful Bay views along the running path at Mission Bay. Come out and experience the joy of crossing the finish line!

Customize your SWAG (Save up to $14): Registration includes a stylish tech race shirt, finisher medal & necklace! If you don't want all the swag you can remove items during registration and reduce your entry fee.
No Shirt: Save $8
No Medal: Save $3
No Necklace: Save $3


Age Discounts
Youth 19 & under receive a 20% discount*
*Age discounts automatically applied during registration

Registration fees

Prices are inclusive of mandatory charges, items, and fees

Half Marathon

Price changes in 1 month 13 days

    1. $54.42

      Breakdown: $49.00 registration + processing fee

      May 24 – Oct 8
    2. $54.42

      Breakdown: $49.00 registration + processing fee

      Oct 9 – Oct 10
    3. $86.51

      Breakdown: $79.00 registration + $7.51 processing fee

      Now registering Oct 11 – Nov 30
      Register for Half Marathon
    4. $91.86

      Breakdown: $84.00 registration + $7.86 processing fee

      Dec 1 – Jan 6
    5. $97.21

      Breakdown: $89.00 registration + $8.28 processing fee

      Jan 7 – Feb 26
    6. $102.56

      Breakdown: $94.00 registration + processing fee

      Feb 27 – Mar 11
    7. $107.91

      Breakdown: $99.00 registration + processing fee

      Mar 12 – Mar 14

10K

Price changes in 1 month 13 days

    1. $54.42

      Breakdown: $49.00 registration + processing fee

      May 24 – Oct 8
    2. $54.42

      Breakdown: $49.00 registration + processing fee

      Oct 9 – Oct 10
    3. $65.11

      Breakdown: $59.00 registration + $6.11 processing fee

      Now registering Oct 11 – Nov 30
      Register for 10K
    4. $70.46

      Breakdown: $64.00 registration + $6.46 processing fee

      Dec 1 – Jan 6
    5. $75.81

      Breakdown: $69.00 registration + $6.88 processing fee

      Jan 7 – Feb 26
    6. $81.16

      Breakdown: $74.00 registration + processing fee

      Feb 27 – Mar 11
    7. $86.51

      Breakdown: $79.00 registration + processing fee

      Mar 12 – Mar 14

5K

Price changes in 1 month 13 days

    1. $54.42

      Breakdown: $49.00 registration + processing fee

      May 24 – Oct 8
    2. $54.42

      Breakdown: $49.00 registration + processing fee

      Oct 9 – Oct 10
    3. $54.42

      Breakdown: $49.00 registration + $5.42 processing fee

      Now registering Oct 11 – Nov 30
      Register for 5K
    4. $59.76

      Breakdown: $54.00 registration + $5.76 processing fee

      Dec 1 – Jan 6
    5. $65.11

      Breakdown: $59.00 registration + $6.18 processing fee

      Jan 7 – Feb 26
    6. $70.46

      Breakdown: $64.00 registration + processing fee

      Feb 27 – Mar 11
    7. $75.81

      Breakdown: $69.00 registration + processing fee

      Mar 12 – Mar 14

Virtual Run

Price changes in 1 month 13 days

  • Must register by February 23rd to ensure receiving your packet by race day.

    1. $54.42

      Breakdown: $49.00 registration + processing fee

      May 24 – Oct 8
    2. $54.42

      Breakdown: $49.00 registration + processing fee

      Oct 9 – Oct 10
    3. $54.42

      Breakdown: $49.00 registration + $5.42 processing fee

      Now registering Oct 11 – Nov 30
      Register for Virtual Run
    4. $59.76

      Breakdown: $54.00 registration + $5.76 processing fee

      Dec 1 – Jan 6
    5. $65.11

      Breakdown: $59.00 registration + $6.18 processing fee

      Jan 7 – Feb 26
    6. $70.46

      Breakdown: $64.00 registration + processing fee

      Feb 27 – Mar 11
    7. $75.81

      Breakdown: $69.00 registration + processing fee

      Mar 12 – Mar 14

Mermaid Dash

Price changes in 1 month 13 days

  • Mermaid Dash for girls and boys between 6 and 12 years old

    1. $18.04

      Breakdown: $15.00 registration + $3.04 processing fee

      May 24 – Oct 8
    2. $18.04

      Breakdown: $15.00 registration + $3.04 processing fee

      Oct 9 – Oct 10
    3. $18.04

      Breakdown: $15.00 registration + $3.04 processing fee

      Now registering Oct 11 – Nov 30
      Register for Mermaid Dash
    4. $18.04

      Breakdown: $15.00 registration + $3.04 processing fee

      Dec 1 – Jan 6
    5. $18.04

      Breakdown: $15.00 registration + processing fee

      Jan 7 – Feb 26
    6. $18.04

      Breakdown: $15.00 registration + processing fee

      Feb 27 – Mar 11
    7. $23.39

      Breakdown: $20.00 registration + processing fee

      Mar 12 – Mar 14

Additional Event Details

COURSE
5K : Map
10K : Map
Half : Map

Tentative START TIMES

7:00 a.m. - Half
7:15 a.m. - 10K
7:30 a.m. - 5k


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

Mermaid Dash Details
Race Start: Tecolote Shores North
Time: 9:45 a.m. (Ages 9 - 12)
Time: 9:50 a.m. (Ages 6 - 8)

CREDIT POLICY
Can't attend one of our events?
We will be happy to issue you a credit toward 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 good through the following calendar year. Credits are nontransferable.

The following credits will be issued:

• Duathlon - Entry fee minus $10 processing fee
• Triathlons - Entry fee minus $10 processing fee
• Run - Entry fee minus $10 processing fee.



Event schedule

  • Sat, March 14, 2026 7:00 AM - Half Marathon
  • Sat, March 14, 2026 7:15 AM - 10K
  • Sat, March 14, 2026 7:30 AM - 5K
  • Sat, March 14, 2026 9:45 AM - Mermaid Dash (ages 9-12)
  • Sat, March 14, 2026 9:50 AM - Mermaid Dash (ages 6-8)

Contact information

Event contact
Mermaid Series
Website
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