The boat, from Epcot to DHS, takes 25 mins, not including any wait times. So....my friend and I left the boat dock area, at International Gateway, as the boat was leaving. We were going to take the boat but they were just about ready to depart so we weren't allowed on....told that another boat would be coming. We yelled back that we would walk and beat them to DHS. They all had a big laugh about that. So....my friend and I walked at a very normal pace to BW. The boat had just arrived, beat us by about 30 seconds (took about 8 mins). Then we headed off to the walkway to DHS as the boat was getting ready to head to YC/BC. That's the last we saw of that boat until we got to DHS. We were headed to bag check when we saw the boat come around the curve...we beat them by about 5 mins or so. With that in mind, it takes about 20 mins to walk from Epcot to DHS, and about 15 to get there from BW...depending on where you are at BW. I am usually close to a door that leads me down to the walkway...so it cuts off a min or two.