Marymoor Park is a popular regional park of 640 acres located in Redmond and operated by the King County Parks system. Located on the north end of Lake Sammamish, it preserves a broad expanse of the Sammamish Valley. In addition to soccer fields, ballfields, and lighted tennis courts, special features of the park include a climbing wall, a radio-controlled airplane field, an off-leash exercise area for dogs and dog-owners, and the Velodrome, an oval bicycle track for organized racing. Several trails lead in and out of the park, connecting with the Sammamish River Trail, the Bridle Crest Trail, and the planned East Lake Sammamish Trail.