Next Race Date is September 17, 2017

Latest News
7.30.2016 :: U.S. Olympic Marathoner Magdalena Boulet to be Special Guest Elite Athlete at the 2016 Half Moon Bay International Marathon
6.9.2016 :: Half Moon Bay International Marathon Passes the Torch to New Ownership and Direction
1.24.2015 :: Next HMBIM Reset to September 18, 2016
3.30.2014 :: Half Moon Bay International Marathon Resets Next Event Date to 2015
11.13.2013 :: Half Moon Bay International Marathon featured in Local Magazine
12.17.2013 :: 2013 HMBIM Contributes $1.56M to San Mateo County Economy
10.3.2013 :: Cancer Can't Knock Him Off Course
9.20.2013 :: New Marathon Addition Geared for Children
10.2.2013 :: Marathon Winners Coast to Victory
9.5.2013 :: Changes afoot for HMB Marathon
7.26.2013 :: "Mayor of Running" to Visit Half Moon Bay
9.28.2013 :: Half Moon Bay Patch Publishes HMBIM Athlete Stories Part 5 of 5
9.27.2013 :: Half Moon Bay Patch Publishes HMBIM Athlete Stories Part 4 of 5
9.26.2013 :: Half Moon Bay Patch Publishes HMBIM Athlete Stories Part 3 of 5
9.25.2013 :: Half Moon Bay Patch Publishes HMBIM Athlete Stories Part 2 of 5
9.24.2013 :: Half Moon Bay Patch Publishes HMBIM Athlete Stories Part 1 of 5
9.30.2013 :: 2012 Half Moon Bay International Marathon Men’s and Women’s Champions Repeat, Shatter Own Records, at 2013 Event
9.22.2013 :: 2012 USATF 10K Trail National Champion to Make Half Marathon Race Debut at the 2013 Half Moon Bay International Marathon
9.13.2013 :: 2012 Half Moon Bay International Marathon Men’s and Women’s Champions to Return to 2013 Event
9.6.2013 :: First-Ever JUST RUN® Half Moon Bay 5K To Be Held As Part Of The Half Moon Bay International Marathon

Event Info

The 2016 Half Moon Bay International Marathon includes a full 26.2 marathon event and a 13.1 mile half marathon event.  

EVENT DATE:  Sunday, September 18, 20162011 Tech Shirts

(all times PDT):

  • Full Marathon: 7:00 a.m.
  • Half Marathon: 7:15 a.m.

REGISTRATION: All events are capacity limited and sell out in advance. Registration is available by clicking here.

PACE GROUPS: The HMBIM will not have Pace Group leaders at the Event. 

SEPTEMBER WEATHER: Average high: 67°F, Average low: 52°F.  This is the most beautiful weather period on the "Coastside" , and we feature the most incredible, clean sea air you've ever experienced! Just look to the right at the weather info to see what it is like right now in Half Moon Bay!

What's Included



  • Technical shirt with a very special design (both Marathon and Half Marathon)
  • GU Gel Products and Electrolyte drink at the Aid Stations at the start/finish! 
  • The only marathon and half marathon 100% along the Pacific Ocean with virtually no highway roads!
  • Healthy snacks and drinks at the start/finish line
  • Entertainment at the finish line including live music!
  • Finisher's medal for the full and half marathon events
  • Online results reporting and special coverage in the local press
  • Port-a-potties on the course, along with Recharge Stations with fluids and GU products
  • Medical care including emergency stand-by and first aid at every aid station. 
  • A once-in-a-lifetime experience in one of the most beautiful running spots in the world


HMBiM-Quick50web-45.jpgOFFICIAL TIMEKEEPING:  The HMBIM features Bib-tag timing to time all events. You will receive your tag at Packet Pickup and it is affixed to the back of your bib. Please just wear your bib as delivered, and don't fold the bib to avoid any issues with your timing tag. 

HEADPHONES AND MUSIC: Our course is conducive to running with headphones, so tune in and rock out! 

BYOB: As part of our GREEN effort of the HMBIM, we highly encourage the use of your own water bottle during the event, however, this is optional, and cups will be provided at the recharge stations. 

PACE GROUPS: The HMBIM will not have pace groups for the events. 

AWARDS AND RECOGNITION:  ln accordance with USATF guidelines, the top 3 OVERALL and MASTERS awards will be based on GUN time, not  B-Tag (i.e. Chip/Net) time.  Divisional age group and Top Coastside awards will be based on B-Tag/Chip/Net time. 

We will provide awards and recognition as follows for the Full and Half Marathon events: 

    • Top 3 Male and Top 3 Female Finishers (Based on GUN time)
    • Top 3 Masters (age 40 and over) for Male and Female (Based on GUN time)
    • Top 3 Age Group awards for Male and Female (Based on chip/net time)
    • Top Coastside Male and Female (Based on chip/net time)

REGISTRATION LIMITS: Full marathoners must be 18 years or older. Half marathoners must be 16 years or older. All athletes should be in good health on the day of the run.

MEDICAL:  The HMBIM team regards safety and medical concerns very seriously. We will have licensed medical staff on-site at the start/finish line, led by our Medical Director, Dr. Pamela Carrington-Tribble, D.O. We will also have trained first-aid staff available at every aid station for any minor medical issues. Please click here to consult valuable medical information compiled for athletes by our Medical Director. 

EVENT CUTOFFS: We will close the course 6 hours after the Full Marathon Start, or at 1:00 p.m. PDT. All distances must be complete by this time. Anyone finishing the event after the course closes will not be recognized as an official finisher. All runners have electronically signed the event waiver at registration time which specifically mandates removal from the course if you will not finish within the cutoff time, so please make sure you are prepared to comply with this rule. This is for the safety of the athletes and to ensure contingincies are managed properly. 




As acknowledged when you registered and signed the Athlete's Waiver, your current year registration is NOT TRANSFERABLE to a subsequent year or another person, NON-REFUNDABLE and NON-CANCELLABLE. 

Bibs may NOT be sold, and the HMBIM will confirm identity of all bib-holders. The Half Moon Bay International Marathon reserves the right to disqualify any runner using another athlete's bib. 

Please review the "Registration Protection" option during checkout of your registration on for new options. This can ONLY be selected during initial registration and does not allow athletes to add this option later. 

Active provides the Registration Protection, but if that is not selected, there are no cancellations for any reason, and no refund will be issued for any reason regardless of urgency or circumstances. THERE ARE NO EXCEPTIONS.


We are a GREEN event, so PLEASE carpool for all the right reasons! Take advantage of ride sharing and meet fellow HMBIM athletes! We're the home of Tesla, and the land of Prius--come on, you know you should! Carpooling is necessary to make the Event work. 

There are also a number of Uber and Lyft drivers on the coast too!

Check out:

Parking Address     Address of Start/Finish
333 Airport Street   HMBIM Start/Finish Line
Half Moon Bay, CA 94019   371 Princeton Road
Parking opens at 6:00 a.m.   Half Moon Bay, CA 94019

Overflow Parking:
 Street-side along Airport Street.

A Free HMBIM Shuttle Service will be active from 6AM - 1PM from the parking and overflow parking areas to the race start finish.  Stop locations are indicated on the map and will have designated "Bus Stop" Signs for the race.

Click here to see an interactive Parking Map. 

Click here to download a PDF Parking Map.


carrington.jpgOnce again, Dr. Pamela Carrington of Main Street Medical will serve as the Medical Director for the Half Moon Bay International Marathon. "Doc" has led the medical team since the founding of the Event in 2011 and has built a formidable team of resources to help care for our athletes. 

Below are important notes and some race day tips from the Medical Team to ensure you have the best possible experience during the events:

  • Please be sure you print your name, address, phone number and details of any ongoing medical problems/allergies/medications/supplements on the back of your bib. 
  • The Medical Team advises you to not participate in the event if you have just recently been ill, or do not feel normal on race day. Recent feverishness, vomiting, diarrhea, chest pains or other discomforts are examples to consider withdrawing from the HMIBM events. 



  • If you get a blister, leave it alone if it’s unbroken
  • If it’s broken or likely to be damaged, cover with a dry, non-adhesive dressing that extends well beyond the edges of the blister
  • Do not break or cover a blister with any creams or lotions
  • To avoid blisters, make sure your running shoes are a good fit and don’t use the Marathon as an opportunity to break-in new shoes!

Heat exhaustion

  • If you start getting a headache, feel nauseous, have pale clammy skin, cramps or a rapid, weakening pulse – you may be suffering from heat exhaustion
  • This is a serious condition, so seek help straight away
  • If you are training and no help is available, find a shady spot in which to lie down with raised legs
  • Even if you recover quickly, see a doctor as soon as you can.

Skin Abrasions/Scrapes

  • Wash your hands
  • Try to wash or pick out small pieces of grit, but don’t attempt to remove anything embedded in the wound
  • Rinse with water or use an antiseptic wipe to clean the wound
  • Apply non-stick adhesive dressing
  • Ensure you are up to date with tetanus vaccines 

Knee joint injuries

  • If you injure your knee, lie down and support your knee in a raised position.
  • Put an ice pack on it or a cold compress
  • Put soft padding around it and bandage it in place
  • Don’t try to walk on the leg or straighten the knee

Nipple bleeding

  • This is caused by friction damaging the skin
  • You can prevent this by covering nipples with a band-aid or petroleum jelly
  • If they bleed, wash and dry carefully and cover with a band-aid, but do not use waterproof band-aids
  • Sometimes, nipple bleeding may be due to more serious problems. If in doubt, consult your doctor.

Water/Fluid Consumption

  • Drink sensible amounts of fluid to keep hydrated, but avoid drinking too much too quickly, or in short amounts of time.

AND FINALLY in all cases of injury on marathon day seek out our medical volunteers at any stop along the course - just look out for the first aid signs.

Good luck – run well!