Millinocket Marathon & Half Marathon
The Millinocket Marathon & Half and the Mount Desert Island Marathon, Half & Relay are pleased to once again join forces to produce the popular Sea to Summit Maine Race Series, featuring two of our great state’s marquee events and a very special finishers medallion!
Reminder: Everyone that signed up for the 2020 Sea to Summit Series was issued a $12 refund on October 7th, including those that deferred their MDI registration to 2021. If you would like to participate in the series this year, you will need to re-register. Please follow the directions on the Run MDI FAQ page to update your registration. Thank you!