Half Marathon races near Portland

Portland Base Miles

Portland hosts 13 Half Marathon races in 2026 within 80 km of the city centre — upcoming dates, recurring series, and other races nearby, all in one place.

Forest Park is the local default when you want dirt, shade, and real Z2 without leaving town. The main fire-road artery runs 2 miles, and singletrack branches off it all day. The Waterfront Park loop gives you a roughly 3-mile river lap between the Steel Bridge and Hawthorne Bridge. Steel Bridge to Sellwood Bridge makes a 10-mile long-run loop by the Willamette River. Portland Running Company keeps the week moving with Monday trails, Tuesday intervals at Duniway Track, Thirsty Thursdays, and Sunday long runs from NW Raleigh. No Name Trail Club joins the Monday trail run. Portland Marathon, Hood to Coast, Starlight Run, and The Cascade Run-Off are the anchor names locals know.

Portland riders use the river, the greenways, and the hills depending on the day. The Heart of St. 5 mostly flat miles, while lower Greeley gives that quick protected-lane downhill grin. Forest Park and Powell Butte handle urban gravel, and Leif Erikson Drive keeps the base miles simple. The BPA road has a 5km descent, and Firelanes 12 and 15 give the legs some bite. The Lake Oswego route packs 25 miles with Maple Leaf, SW 27th Ave, Springbrook Park, Iron Mountain, and Cooks Butte. Portland Bicycling Club runs rides through the week, Gravelland PDX covers the gravel crowd, and Pioneer Century, Monster Cookie Metric Century, and Reach the Beach 2026 sit on the calendar.

Spring, summer, and fall are the cleanest training months here. Forest Park stays cool in summer under Douglas firs, red alders, western hemlocks, ferns, and moss, so runners keep using Leif and the trails when the streets feel warm. The Eastbank Esplanade gives 1,200 feet of floating walkway when you want a river spin or a soft recovery jog. Locals use summer for long Z2, gran fondo prep, crit legs, and dry singletrack. Winter changes the kit more than the habit. Serious cyclists ride year-round with full coverage fenders, waterproof cycling shoes, thermal bibs, rain pants, and a breathable rain jacket. Group rides thin out, but they do not disappear.