Maine Marathon

The Maine Community Bank Maine Marathon, formerly known as the Casco Bay Marathon, is a series of USATF-certified road running events held each October in Portland, Maine that includes a full marathon, a half marathon, and a marathon relay. The course is an out-and-back that starts and finishes along the Back Cove of Portland, going up the coast to Yarmouth and back. The terrain is mostly rolling hills and passes through the towns of Falmouth and Cumberland before the turnaround point in Yarmouth.

History

From 1978 through 1987, the event was known as the Casco Bay Marathon.
The 2012 race was held on Sept. 30, and the 2013 event was held on Oct. 6.
The 2020 in-person edition of the race was cancelled due to the coronavirus pandemic in Maine|pandemic], with all registrants given the option of running the race virtually, transferring their entry to 2021, or obtaining a full refund.
Beginning in 2024, the Maine Marathon became one of the first road races to award to non-binary athletes the same prize money as the top male and female runners.
The 2025 event surpassed 5,000 registrations, making it the largest marathon in Maine, and the second largest road race of any distance in the state after the Beach to Beacon 10K.