Few places you will ever run or visit have the long running history of our small tranquil Maine island. Great Cranberry Island is easily accessible by boat (ferry), but it will make you feel as if you are very far away from the often hurried & frenzied pace of the rest of the world. Great Cranberry is located just off-shore from Mount Desert Island, home to Acadia National Park. The original Great Cranberry 5k held in the 70s & 80s quickly gained a cult fan following.

In 2007 the Great Cranberry Island 50k was held for the first time. It was named "Best Race Ever!" by Runner's World and the Road Runners Club of America National Ultra Championship at the final running of our 50K in 2013. That edition was subsequently voted the RRCA Road Race of the Year.

The Great Run was held for two years in 2015 & 2016, and made a significant impact on the Maine running scene. One of the most notable competitors to compete in both editions was Michael Westphal. If you haven't seen his inspiring story we'd encourage you to do so now. Plus you can get a preview of our island/course!. Click HERE to view.

The first ever Great Cranberry 100 was held in 2018 with running icon Michael Wardian blitzing the course in 15:29:59 — a personal best and Maine’s fastest road 100!

Event Details

START LOCATION: Great Cranberry Island, Maine • 04625


RACE START DATE: Friday August 16th, 2019
          >> PRE-RACE BRIEFING: 11:00am
          >> START TIME: 12:00pm-noon

RACE FINISH DATE: Saturday  August 17th, 2019
          >> COURSE CLOSE TIME: 6:00pm
          >> AWARDS & VICTORY DINNER: 7:00pm

COURSE TIME LIMIT: There is a strict 30-hour course time limit. Belt buckles to all 100-mile finishers.


BENEFICIARY: Team Fox, in support of the Michael J. Fox Foundation for Parkinson’s Research.


STAY IN TOUCH: HERE (via our Facebook event)


  • Our-later-than-normal start time is to allow for ferry transportation on Friday morning.

  • The start/finish is at the church, ½-mile from the dock.

  • There is rustic camping at the town field behind the church.

    • Camping is available for Friday and Saturday nights.

    • There will be a bonfire near the camping area.

  • All runners must be self supported with special fluids, food, and gear for the duration of their run.

    • Runners must have a minimum of one support crew, although we strongly recommend bringing at least two crew members. (100-miles is a long way and two people will ensure split shifts for sleep during the night.)

    • Bring everything you might need or wish you had.

    • There will be tables on the course located at the start/finish line.

    • Water, ice and Gatorade will be available.

    • Support crews are encouraged to bring well-stocked pop-up tents to set up on the course near the start/finish area to support their runners.

    • Please bring your bicycle, imagination, games, Frisbees, musical instruments, or whatever you please, and come enjoy our island!

  • This is a real island; you can't drive your car here unless it floats! Don't worry, just get on a ferry (see below) and we'll help get you from the dock to the race start once you get here.

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Apply for Entry

Thank you for your interest in the Great Cranberry 100. Please complete the preliminary application below to be considered for acceptance into this year’s race.

IMPORTANT: Submitting this application does NOT guarantee acceptance into the race. If your application is accepted you will be sent a registration link and code.

Course Map

The start/finish/course support area is located in front of the Church and Community Center on the main paved road. Each circuit is 4-miles.

Race Rules

  • Runners MUST start at 12-noon on Friday to be included in the race results.

  • There is a mandatory pre-race briefing at 11:00am before the run.

  • All runners must be self-supported with fluids, food, and gear for the duration of their run. There will be tables on the course located at the start/finish line.

  • Runners must have a minimum of one support crew, although we strongly recommend bringing at least two crew members. 100-miles is a long way and two people will ensure split shifts for sleep during the night.

  • Timing sheets (provided) must be completed by support crew upon the completion of each 4-mile lap at the start/finish line. Failure to turn in a completed time sheet will result in a DQ.

  • There will also be a google doc and times should be added by crews using personal smart-phones or tablets.

  • Overnight runners MUST have a working headlamp, a blinking tail light and a reflective vest worn 30-minutes before sunset, which occurs at 7:39pm on Friday, and until 30-minutes after sunrise, at 5:38am on Saturday. If runners are seen by a race official, or reported by another participant as not wearing appropriate night gear, the competitor may be disqualified.

  • Support crews must wear reflective vests during the same overnight hours.

  • There is a full moon on race night to help illuminate your way!
    Moonrise is at 8:34pm on Friday, and Moonset is at 7:27am on Saturday.

  • There is a 30-hour time limit. Please use the following timetable to check your progress thru-out the event and to help you stay on track for a successful finish! For example if you are not at Mile 40 by midnight, you’re gonna need to lean into your work! Likewise if you get to mile 40 at 10PM you can take a nap!

Time checks are as follows:

Mile 41:12:001:12 PM (Friday)
Mile 82:24:002:24 PM (Friday)
Mile 123:36:003:36 PM (Friday)
Mile 164:48:004:48 PM (Friday)
Mile 206:00:006:00 PM (Friday)
Mile 247:12:007:12 PM (Friday)
Mile 288:24:008:24 PM (Friday)
Mile 329:36:009:36 PM (Friday)
Mile 3610:48:0010:48 PM (Friday)
Mile 4012:00:0012:00 AM (Midnight)
Mile 4413:12:001:12 AM (Saturday)
Mile 4814:24:002:24 AM (Saturday)
Mile 5215:36:003:36 AM (Saturday)
Mile 5616:48:004:48 AM (Saturday)
Mile 6018:00:006:00 AM (Saturday)
Mile 6419:12:007:12 AM (Saturday)
Mile 6820:24:008:24 AM (Saturday)
Mile 7221:36:009:36 AM (Saturday)
Mile 7622:48:0010:48 AM (Saturday)
Mile 8024:00:0012:00 PM (Saturday)
Mile 8425:12:001:12 PM (Saturday)
Mile 8826:24:002:24 PM (Saturday)
Mile 9227:36:003:36 PM (Saturday)
Mile 9628:48:004:48 PM (Saturday)
Mile 10030:00:006:00 PM (Saturday)

Community Kitchen

  • Friday Dinner: 6PM

  • Awards & Victory Dinner: 7pm

  • Sunday Breakfast: 7AM

Now is the time to plan what  you will bring to share and prepare in our Community Kitchen! (There also is a small, fairly well-stocked general store on the island.) We have four meals to plan. We have created this document to help you coordinate with each other, please utilize it!

  • Community Kitchen google doc: http://gci100-kitchen.crowathletics.com/

  • There is a full kitchen with refrigeration, stove, oven, cookware, utensils, coffee pot, etc., along with a great big sink to wash everything!

  • Crews should work together to prepare food to be shared.

  • Community meals should be planned for Friday, Saturday, and Sunday at the Ladies Aid Community Center, located right next to the Church at the start/finish line.

  • It is the responsibility of runners and their crew to bring ALL ingredients and work together to prepare, serve, and clean-up all meals as outlined below. We recommend pre-made items such as casseroles, quiche, salads, etc. (Don’t forget beverages! BYOB.)

  • The kitchen MUST be left cleaner than we find it.

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getting here

From Southwest Harbor (SWH) & Manset, Maine

From Northeast Harbor (NEH), Maine

Water Taxi - Between Any Two harbors

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Great Cranberry Island has a long and storied running history! Click below to see pictures, video and more from past events. All races have followed the same 2-mile stretch of road.

Great Cranberry Road Race & 5k

  • 4.8 Miler held in 1979

  • 5k held in 1980, 1981, 1982, 1983 & 2004

  • Top 25 race in the US - Runners World

Great Cranberry Island Ultra 50K

  • Held from 2007-2013

  • Click HERE to learn more

The Great Run

  • Held in 2015-2016

  • Click HERE to learn more

Great Cranberry 100

  • Held for the first time in 2018

  • Click HERE for results

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2018 GCI 100 Finishers

August 18, 2018

  1. Michael Wardian (44) Arlington, VA — 15:29:59

  2. Bradford Lombardi (49) Jensen Beach, FL — 24:21:05

  3. Nick Brown (31) Ellsworth, ME — 27:39:42

  4. Rebeccah Geib (29) Bar Harbor, ME — 28:02:57

  5. Dylan Brann (30) Bar Harbor, ME — 28:02:57

  6. Bryan O'Keefe (35) Billerica, MA — 29:19:08

    Race Results: HERE
    2018 Google doc with splits: HERE

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Team Fox, in support of the Michael J. Fox Foundation for Parkinson’s Research is the 2019 beneficiary of the Great Cranberry 100.

Our good friend and local runner, Michael Westphal, grew up on Great Cranberry Island. He and our race organizer, Gary Allen, attended the one-room schoolhouse and the two of them made up the entire 8th grade graduating class.

Once a stand-out high school, college, and post-collegiate runner, Mike stepped away from the competitive sport to raise his family. In 2006 he was diagnosed with Parkinson’s Disease. In 2015 he ran is first marathon in over 23 years, finishing in 3:32:56 -- a Boston Marathon qualifying time! Mike has used his running to bring awareness and over $100K in fundraising dollars to support the mission of the Michael J. Fox Foundation through Team Fox.

You can read more of Mike's incredible story HERE.

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GCI runners have a long and storied history and could be found racing all over New England and beyond in their signature red Great Cranberry singlets.

In honor of the Great Cranberry 100, these throwback singlets are once again available, thanks to our friends at Atayne!

Click HERE to order yours today! Note: You will need to order by July 30th to receive it in time for race weekend.


Crow Athletics is proud to host the Bridge the Gap Race, the Down East Sunrise Trail Relay, the award-winning Mount Desert Island Marathon, and the FREE Millinocket Marathon & Half.