Buchon is a satellite city of Seoul, located between Seoul & Incheon. It’s densely populated, and also a major manufacturing center. Here are the best places to run in Bucheon:

Sangdong Lake Park. The easiest & most popular running spot in Bucheon. Scenic park with ~3 km of landscaped paths & a pond. The outer perimeter loop is 1.5 km. There’s a short running track. Just north of the park, add with the Botanical Garden.  Metro: Samsan Gymnasium
 
Gulpocheon Bicycle Path. This ~9 km paved cycle path is a decent spot for a run. The path follows Gulpocheon Stream. Note there are some sections that are better for pedestrians than others. There are connections to our Ara Canal route at the north end & Han River route. Metro: Samsan Gymnasium (@ the south end).
 
Trail Running Options. Near Bucheon Eco Park, there’s hilly trail running here, in the area headed south from Highway 120 and east of Yeokgok-ro. West of Yeokgok-ro, some nice running on Azalea Hill & Bucheon Wonmi Park and a running track at Bucheon-Stadion. This area is especially pretty during blossom season!