A lot has happened over the past 40 years! Please check out our history page and peruse highlights and fun facts about CIM's rich history.

Schedule of Upcoming #road2CIM Events:

New important dates will be listed in future newsletters so please stay tuned.

Did you know? There will be a Lactation Station available for lactating mothers in the marathon start area. This will be an enclosed area designated exclusively for participants to pump pre-race at the start near the VIP area. The semi-private Lactation Station is a multi-user lactation space equipped with tables, chairs, power outlets, hand sanitizer, and sanitizing wipes. Porta-potties are available next to the Lactation Station. Pumps will be transported to the finish line for pick up at gear check. You can find more information on our FAQ page.

We encourage all runners to log into their Race Roster accounts to verify personal information such as: date of birth, gender (more inclusive options available), emergency contact information, expected finish time, and more.

To edit your account please follow these steps:

  • Sign in to your Race Roster account HERE and choose the 2023 CIM
  • Click edit registration in the right corner of the screen
  • Update your information if needed from the Personal Information or Registration Questions tab
  • Click Save & exit

We understand that life's unexpected events can sometimes prevent registered participants from participating in the December marathon. As a reminder, please note that race entries are non-refundable, and we do not offer a deferral program. However, we do provide a TRANSFER option for registrants who are unable to participate in the 2023 event. The transfer window is scheduled to open on October 30. During this period, participants have the opportunity to transfer their marathon entry to the CIM Relay or pass on their race entry to another interested runner. To facilitate these transfers, we've created a dedicated Facebook group where runners can connect for these purposes. Additional information can be found here, and more details will also be included in upcoming newsletters.

Still looking for a place to stay race weekend? A limited number of rooms still remain at several of our partner hotels.

Tips for obtaining a hotel reservation:
  • Partner hotels are the most convenient option for your ability to walk to CIM start buses on race morning. Click here to check availability.
  • If you can't find an available partner hotel, secure lodging at other hotels or Airbnbs available in the area. It is common that vacancy at partner hotels will open up later in the fall; depending on cancellation policies, you may be able to move over to a partner hotel as space opens up closer to race weekend.
  • If the hotel you're considering for booking indicates that there are no CIM block vacancies, it's still possible that the partner hotel might have non-block rooms that are available. For more information, kindly reach out to the hotels directly.

Each month we will bring you training and nutrition tips, information and fun facts from our expert coaches and partners.

Check out the CIM Universityarea on our website to help you in your preparation for CIM. The CIM University video library has outstanding resources to help with training, fueling, injury prevention, course and race day tips. Click here to learn more.


Check out GU’s top 12 fueling and hydrationtips! Use your training runs to practice your nutrition plan and see what works best for your body. Click here to learn more.

You get to choose the GU flavors on course this year! Voting begins on September 9. Don’t forget to follow us on social media so you can place your vote! Our links are posted at the bottom of this email.

Prepare with the best in the Official CIM Training Program! The Official Training Program has everything you need to run your first or your fastest marathon: experienced coaches, ability-based training plans, marathon specific seminars, race day premium amenities, and so much more! There are BOTH online and in-person training options still available. Click here to learn more.

We can't do what we do without our amazing volunteers! If you have friends or family members who would like to be a part of the action race weekend, we are still looking for a few good volunteers. Anyone interested in volunteering can register here.

Registration is still open!

Run the Parkway- Nov. 5*

The Official Training Run for CIM is the best way to get "CIM-ready". 20-mile and half marathon distances available. Register here!

CIM 2-Person Relay- December 3

Registration is currently open for the 2023 CIM 2-Person Relay. There are limited spots so this event will sell out before race weekend. Tell your friends and family to register soon if they intend to race!

*Please note: If you registered for the 2023 CIM with your 2020 Worry Free Voucher Code and if you added on the Run the Parkway in 2020, we have automatically added you to the Run the Parkway registration page. You can confirm your registration here.

Information To Come

Upcoming newsletters will have more detailed information regarding:

  • Course Nutrition and Hydration
  • Getting to the Start Line Updates (busing)
  • Spectator Updates
  • Course Updates

Need More nformation?

If you have a question that is not answered here, in the newsletter, you can visit the CIM website or email us at info@runsra.org. However, stay tuned as your question may be covered in upcoming newsletters.

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