Circle Line: Bear Mountain Full-Day Cruise. Escape NYC and take a leisurely cruise up the Hudson River to historic Bear Mountain. You’ll enjoy a 2.5 hour cruise each way with an Onboard Oktoberfest – new this year! Once docked, you’ll have approximately three hours to enjoy Bear Mountain’s natural beauty, abundant hiking trails, zoo and more. Book now and Save 40% Off Circle Line: Bear Mountain Full-Day Cruise.