2021 Online Registration

Runners pack the finish line at the 2019 3M Half Marathon


Click here to do so! Simply click Log In at the top of the screen and create an account and see your registrations

Registration Entry Fees

Special Launch Pricing through January 22nd at 11:59 p.m.

May 8 – June 18


June 19 – July 30


July 31 – Oct. 1


Oct. 2 – Nov. 12


Nov. 13 – Jan. 9


Jan.10 – Jan. 16




Combo Deal

At the time of check out, you will have the option to add the 2021 Austin Marathon & Half Marathon for an additional discount! Receive an additional $10 off the 2021 Austin Marathon or Half Marathon. This offer is only available at the of 3M Half Marathon checkout and can not be applied later.

Refund/Transfer/Deferral Policy

This policy is in place to protect both the event and participants. High Five Events, the producer of this event, is a year-round operation employing many full-time staff members who work on this event year round to ensure a fun and safe environment. Almost all of the supplies and services for the event must be purchased well in advance of the actual event date. We have worked hard to ensure there are options available while also being sure we can continue to offer the best quality event year after year.

All transfers must be approved through High Five Events. Anyone caught attempting to sell or transfer their race entry/bib to another person or participate in the event using another participant’s race entry/bib as part of a non-approved transfer, will have said race entry/bib revoked, be disqualified, and be removed from the race without refund.

The 3M Half Marathon Refund/Transfer/Deferral Policy is subject to change at any time.


If the 3M Half Marathon is cancelled due to a government order related to the COVID-19 pandemic, then all participants will be offered a transfer to one of the next three editions of the 3M Half Marathon (2022, 2023, or 2024) with the deferral fee waived.  Refunds will not be offered.


August 13, 2020 – Last day to request a 50% Refund

October 8, 2020 – Fee increases for Deferrals

January 12, 2021 – Last day to request a Transfer or Deferral online

January 13 – January 16 – Transfers and Deferrals only available in person at expo

January 16, 5 p.m. – No Transfers & Deferrals requests will be processed after this time.


  • 50% refunds are available until August 13, 2020. Transaction fees cannot be refunded.
  • Complete this form to request a partial refund.


  • Participants may transfer their registration to another participant for a $15 transfer fee
  • For the safety of all participants, participants may not give or sell their entry to anyone as a part of a non-approved transfer.  Transaction fees cannot be refunded.
  • Shirt size not guaranteed for transferred registrations. 
  • Complete this form to request a transfer.


  • Participants may transfer to the 2021 Ascension Seton Austin Marathon, Austin Half Marathon, or 5K for a $20.00 transfer fee + any registration price difference at the time. 
  • For example, 3m Half Registration is currently $89.00 and the Austin Half Marathon registration is currently $99.00.  Then the total fee for the transfer is $30.00. 
  • Complete this form to request a transfer.


  • If you are currently registered for the 2021 3M Half Marathon you may apply to defer your registration to 2022 3M Half Marathon.  
  • Deferrals will be assessed a $30 processing fee through October 7, 2020.  
  • Starting October 8, deferrals will be assessed a $35 processing fee.  
  • Once a deferral is submitted, the decision is final and cannot be reversed. 
  • To request a deferral, please email info@3mhalf.com with your request and registration confirmation #. Please also indicate that you have reviewed the policy and fees. The confirmation code can be found in your Confirmation Email or by viewing your account on EventDog.com.