The McKinley River Bar Trail is in one of the furthest points in the park by the famous Wonder Lake. This flat out and back trail takes you through brushy wetlands, over wooden boardwalks, and to the rocky, open banks of the large, glacier-fed McKinley River. This hike can be very buggy due to the swampy terrain so, if possible, it is best to complete it in June or late August when the mosquitos are fewer. This is an amazing hike in a unique, remote part of the park.