Portland Sea Dogs Mother's Day 5K

Lace up for a truly memorable race experience at the 24th Annual Portland Sea Dogs Mother's Day 5K on Sunday, May 10, 2026, in scenic Portland, Maine. This beloved event, which also includes a 1-mile Kids Run, offers a fantastic way to celebrate Mother's Day while supporting a vital cause. Runners will enjoy a flat, USAT&F certified course, leading through charming city neighborhoods and Deering Oaks Park, before culminating in a truly unique finish: crossing home plate inside Hadlock Field, home of the Portland Sea Dogs, right in front of the third base dugout.

The Portland Sea Dogs Mother's Day 5K is renowned as the largest 5K road race in Maine, drawing a lively crowd of participants and spectators alike. Participants can expect typical race day conditions with highs around 64°F and lows around 45°F, with a 15% chance of precipitation, providing pleasant running weather. Beyond the unique finish line, what makes this race truly special is its dedication to philanthropy; proceeds directly benefit the American Cancer Society, supporting breast cancer patients and research efforts.

All participants receive a complimentary ticket to a future Portland Sea Dogs game, with top overall male and female finishers earning a trophy, season tickets, and the honor of throwing out a ceremonial first pitch. The first 750 registrants will also take home a commemorative race shirt. With a free Kids Run led by the Sea Dogs' mascot Slugger and his mom, this event promises a fun-filled day for the entire family.