Half Marathon races near Portland

Portland Base Miles By The Bay

Portland hosts 3 Half Marathon races in 2026 within 80 km of the city centre — upcoming dates, recurring series, and other races nearby, all in one place.

The Back Cove loop runs 6 miles and stays mostly flat with one slight rise by I-295. The waterfront trail runs 15 miles out and back on an old rail corridor, with harbor and ocean views doing the work. Western Promenade Park starts a good West End Tour over Libbytown and Stroudwater, then Bramhall Hill gives the steep bit. Runaways Run Club brings the biggest weekly crew in Southern Maine. Valor track club owns Tuesday nights at Fitzpatrick Stadium. Maine Marathon and WEEKLY BACK COVE SERIES 2026 feel like anchor events.

Cyclists use Back Cove and Eastern Promenade for urban greenways, then point south from Bug Light Park when Z2 needs less stopping. Portland to Cousins Island gives smooth roads, wide shoulders, rolling terrain, and a 33-mile option with 325 m of gain. The 5-mile option has 823 m of gain. Portland Velo Club is the big club here, and Forest City Cycling of Portland has roots back to 1988. Greater Portland NEMBA and Single Track Sisters keep the singletrack side moving. Dutton Hill, Fire Hydrant Hill, and the Freeport-to-Brunswick hills hold the climbing.

Summer gives Portland its best base miles, with mild highs averaging near 80F or 26C and long evenings for intervals, pub runs, and no-drop rides. Locals use May through September for the big rhythm, from the John Andrews Memorial Eastern Trail 5K Walk/Run to Maine Lighthouse Ride 2026. Back Cove gets busy in a good way, and the coast keeps rides feeling fresh. Winter changes the kit and the pace. January highs sit near freezing, lows hit 13F, and about 60 inches of snow pushes runners toward cleared loops while cyclists mix trainers, gravel windows, and cyclocross grit.