Conveniently sign up at the registration information page or visit Pacific Islands Club front desk registration kiosk to register in person. Credit card payments will be the only acceptable form of payment for all registrations.

If you are unable to run, and agreed to participate in the Registration Refund Plan for a nominal fee during your registration process, you may be eligible for a refund. With our Registration Refund Program you can request a refund of your regular registration fee if you are unable to participate due to specific covered reasons such as injury, illness, pregnancy, and unexpected travel delays. All refund requests are handled by Stonebridge Benefit Services. If you opted out of the Registration Refund Plan during your registration process, your race fees are non-refundable nor are they transferable from person to person or year to year.

Yes, race changes will be allowed to registered runners. Race upgrades will be charged the difference between the registration fee paid and the current fee for the desired race. Race downgrades will not be charged a fee and will not receive any refund for the difference in race fees. Registered participants must go to ChronoTrack Live and log into your athlete profile by using the email address you used during your race registration in order to process the race change. Participants who did not set up an account at the time of registration may visit the same website and create a new account. Additional information can be found via the Chrono Track Help link

Race numbers are non-transferable, and doing so will create confusion with the results. Should a number be sold or transferred, the Guam Ko'ko' Half Marathon takes NO responsibility for third party errors. Race numbers correspond to the registered participants. Participants who use transferred race numbers will be disqualified and are ineligiblefor division awards and overall prizes.

This year marks the 12th Annual Guam Ko'ko' Half Marathon. Each year, the race grows in the number of participants and as well as the added value for Ko'ko' runners - from the giveaways and activities to the prizes and post-race party. Each finisher will receive an official Guam Ko'ko' Half Marathon event shirt, finisher's medal, a reusable event bag, and access to the post-race party! In addition to all of that, the Guam Ko'ko' Half Marathon is a signature Guam Visitors Bureau sports event that is professionally organized by the experienced team at Guam Sports Events, so you will not only have a safe and good time, but the course quality and overall experience will be world class.

Running the Race

You must be at least age 14 on the day of the race to run in the Half Marathon. There is no minimum age requirement to run in the 10K and 5K races.

For safety and insurance reasons, music players and headphones are not permitted on the course. The Guam Ko'ko' Half Marathon is also one of the few occasions in life in which crowds will be cheering and clapping for YOU. Enjoy it!

The Ko'ko team loves animals, but for the safety of our furry friends, we ask that you leave them at home on race day. Pets will not be permitted on the course.

For the safety of all of the runners, we do not encourage strollers on the race course. However, if participants bring strollers, their child/stroller will NOT be registered, nor receive a finish time. Also, please start toward the back of the starting line to ensure you do not block other runners.

Runners of all abilities are welcome. We recommend that you line up toward the back of the start line and run on the right-hand side of the lane. Be sure not to stop suddenly or veer into the paths of other runners. If you're running with friends, run no more than two abreast. Doing so keeps traffic on the course moving smoothly. Please note: the half marathon course will stay open for four hours.

No, you will NOT be able to run the race without a race number. If you do not wear your timing chip, you will not receive a finish time. Race officials will remove non-registered runners from the course.

To ensure fairness, number assignments are made on a completely random basis when each runner registers.

Unfortunately, only ONE race bib is issued per runner. Lost race bibs cannot be replaced under ANY circumstances.

Each race number (and corresponding timing chip) is assigned to YOU specifically. If you wear another person's number, your finishing time will be recorded under HIS/HER name. Please do NOT mix up your race number and timing chip with someone else's. In the event participants mix up bibs, both runners will be disqualified.



We would love to hear from you. Please send your contact information to, and we will get in touch with you.

Packet Pick Up

Please bring a valid photo ID. Race numbers, timing chips and T-shirts will be distributed at the race packet pick-up on Friday, October 27 from 11:00 a.m. to 6:00 p.m. andSaturday, October 28 from 9:00 a.m. to 6:00 p.m. at the Main Pavilion - Governor Joseph Flores Memorial Park, Ypao Beach. You MUST pick up your packet during this time. There is NO race day packet pick-up.

Written consent will be accepted for proxies if presented with a copy of the registrant's I.D. and a copy of the registration confirmation. Packets will not be mailed.


There are a total of seven aid stations along the Half Marathon course. You will pass each of these twice for a total of 14 stations available to you on the course. Each station will offer water and sports beverages.

Yes! There will be six restrooms throughout the course, and plenty will be available at Chamorro Village.

Click here to view the Ko'ko' Half Marathon start and finish maps.

The half marathon course will be open until 8:00 a.m. Participants still on the course at this time will be required to move to the sidewalks and obey all traffic signals. The finish line will close four (4) hours after the start of the race. Please note that participants who cross the half marathon finish line after 8:00 a.m. will not be recognized as official finishers and are not guaranteed a finishing time.

We would love to see the entire race course lined with cheer groups for runners! Please come out and encourage all runners by cheering for them as they pass by your home or village.

Race Day

Yes. Before the race, personal belongings may be checked into the Bag Drop Bus located on the north side of Chamorro Village. There will be a Bag Drop Bus for local residents and one for international participants. Bags will be stored on the busses according to bib number. While we take the utmost care with all items left at the Bag Drop Bus, we cannot be held liable for lost items. The bag drop is for runners only and will be open from 3:00 a.m. to 9:00 a.m.

You will be given a Ko'ko' event bag at packet pick-up. Backpacks will not be allowed into the park, and all bags are subject to search. If you plan to use the bag drop, please note that only Ko'ko' event bags will be accepted.

Deposited bags can be claimed according to bib number at the bag drop bus where it was deposited. Once claimed, bags cannot be re-deposited. Bags not claimed by 9:00 a.m. on race day will be given to charity.

Yes. There will be male and female changing tents available.

Post Race Party

Sports drinks and water stations will be available immediately after you cross the finish line.After receiving your finisher's medal, you may proceed to the post-race party where additional refreshments and offerings will be available.

Yes. In addition to the post-race refreshments for finishers, there will be food and beverages available for sale after the race.

You may choose to bring cash (which can be securely stored in the Bag Drop Bus) to purchase concessions. The post-race vendors will be operating on a cash-only basis. An ATM will be available on site.

Yes. We encourage you to invite your family and friends to cheer you on as you finish your race and join you for the post-race activities.

The Cool Zone is where you will find the water "misters" to help you cool off after the race.

There will be an information tent with a map of the post-race party layout.

For the safety of all participants, all persons, bags, and personal items are subject to inspection before entering Chamorro Village in Hagatna. Only official Ko'ko' event bags will be permitted on the event grounds or throughout the course.

The following items are also prohibited:

  • hard-sided coolers
  • cans
  • bottles (except sealed water bottles of 16 oz. or less)
  • glass containers of any kind
  • alcoholic beverages
  • illegal substances
  • firearms (or any items that may be dangerous or cause injury to others)


Parking will be allowed at Chamorro Village/Paseo parking lot. Additional parking will be available in Hagatna.