Cleveland, Ohio has a humid continental climate with warm summers and cold winters. The city sits on the southern shore of Lake Erie, providing ample opportunities for outdoor recreation such as fishing and boating. The Cuyahoga River flows through the city and has undergone significant improvements in water quality in recent years. The Cleveland Metroparks system offers over 24,000 acres of parks, trails, and nature preserves for hiking, biking, and wildlife watching. The nearby Cuyahoga Valley National Park features the Ohio & Erie Canal Towpath Trail, which runs 85 miles from Cleveland to Akron and provides opportunities for hiking, cycling, and horseback riding.