Some lovely running options just north of Boston: Scenic, paved multi-use paths along the Mystic River; the ~11 mile Northern Strand Community Path from Everett to Lynn; and 100 miles of mixed-use trails in Middlesex Fells Reservation.
In West Las Vegas & Summerlin, a terrific loop of up to 8 miles, using the Lone Mountain, Bonanza, & Angel Park multi-use trails, and a path through Pueblo Park. Also a running track at the Bette Wilson Soccer Complex.
Drottningholm Palace is a great spot for a destination run, with beautiful grounds and gardens. Also in the area are nice wetlands trails around Judarskogen Nature Preserve and forest trails of Kärsön Island.
Located in the district of Hortaleza in northeast Madrid, this 840-acre park has 32 km of trails that are great for running. The terrain is fairly open & exposed, with some hills! A perimeter loop is ~5 km. Great option near the airport.
At the southwestern end of Oahu near Kapolei, there's a concrete path passing several beachfront resorts in Ko'Olina, passing four man-made lagoons. Nice water views & lush vegetation. 5 km out & back.
Scenic and festive waterfront run in this coastal town 45 km southwest of Barcelona, and easily reachable by train. Up to 4.3 km one-way, on wide path around the port/marina area, through old town, and along the beach. Water views the whole way.
A series of trails and cycle paths through forest parks and sports complexes in the Entrevías, Pavones, Palomeras, and Vicálvaro districts of south/eastern Madrid. Numerous options for shorter or longer distances, all off-road.
A route through three pleasant parks in EUR, the business district in southern Rome known for its monumental Fascist-era architecture & also the location of the major La Nuvola Conference Center. Parco del Lago dell'EUR, Parco degli Eucalipti, & Parco del Ninfeo.
One of our favorite places to run in KC. This scenic road, located in George E. Kessler Park and now permanently closed to cars, offers bluff-top views of the Missouri River and passes numerous historic sites.