The Great Lakes Marathon Series is a collaboration of marathons that take place along the 5 Great Lakes. The goal of this series is to invite the running world to come and enjoy the unique beauty of each race, while simultaneously raising awareness of conservation and restoration efforts of the Great Lakes as well as focusing on the Great Lakes ecosystem and economies. Please note that the Great Lakes Marathon Series can only be accomplished by running the 26.2 mile distances offered through the races in the Great Lakes Marathon Series. Races run at any other distance or locations will not count towards the completion of the race series.


The Great Lakes Marathon Series is for runners who are interested in experiencing a variety of marathons along the Great Lakes, while at the same time making a positive impact on the eco-system of the Great Lakes Basin.

The series is for fast and slow runners alike with individual prizes being awarded based on the number of Great Lakes races you complete throughout your running career. We will award prizes at benchmarks along the way, including a grand prize for completing all races in the series!

The Great Lakes Marathon Series organizers invite you to sign up for the series and log your miles. Through this site you will be able to upload each of your finishing times and track your progress!


The Great Lakes Marathon Series training shirt is a Greenlayer, Helium E2 shirt with a simple GLMS logo design.  To order a training shirt, please email Tara@GrandmasMarathon.com

Price of the Great Lakes Marathon Series training shirt is:  $30

Great Lakes Marathon Series training shirts are available for purchase in both men’s and women’s sizes!

Below is a list of our participating #GLMS races in order by race day.

Mercy Health Glass City Marathon
Toledo, OH – April 26, 2020

Wisconsin Marathon
Kenosha, WI– May TBA

Toronto Marathon
Toronto, ON– May 3, 2020

Rite Aid Cleveland Marathon
Cleveland, OH – May 17, 2020

Cellcom Green Bay Marathon
Green Bay, WI – May 17, 2020

Buffalo Marathon
Buffalo, NY – May 24, 2020

Maritime Marathon
Manitowoc, WI – June TBA

Grandma’s Marathon
Duluth, MN – June 20, 2020

Charlevoix Marathon
Charlevoix, MI – June 20, 2020

Two Hearted Trail Marathon
Paradise, MI – June TBA

Waugoshance Trail Marathon
Carp Lake, MI – July TBA

Grand Island Trail Marathon
Munising, MI – July TBA

Marquette Marathon
Marquette, MI – August 31, 2019

Erie Marathon at Presque Isle
Erie, PA  – September 8, 2019

MVP Health Care Rochester Marathon
Rochester, NY – September 22, 2019

Oktoberfest Marathon
Spring Lake, MI – September 21, 2019

Sleeping Bear Marathon
Empire, MI – October 5, 2019

Bank of America Chicago Marathon
Chicago, IL  – October 13, 2019

Towpath Marathon
Cleveland, OH – October 13, 2019

Whistlestop Marathon
Ashland, WI – October 12, 2019

Detroit Free Press/TCF Bank Marathon
Detroit, MI – October 20, 2019

Scotiabank Toronto Waterfront
Toronto, Ontario, Canada – October 20, 2019

Hamilton Marathon
Hamilton, ON – November 3, 2019