It would take 6 years, 105 days, 5 hours, 16 minutes, and 42 seconds to complete every successful channel swim in order. August 22nd is the most successful day of the year, with 69 swims: 2020 Dover.UK.com Copyright Service Agreement Privacy StatementDirectoryAdvertisementContact end link. The average person can swim 25 miles per day for 3 months before reaching physical exhaustion. It takes an elite swimmer 75 days to cover the distance because they can swim 50 miles per day for 3 months straight. The fastest known human swimmers have covered the channel in under 4 hours, but they were using breathing devices called "scuba tanks". No one has ever crossed the channel without help from some form of mechanical aid. You need to be a strong swimmer to cross the channel. The current is very strong, it can lift you out of your swimming pool and throw you against the wall of the channel if you aren't careful. There are lots of dangerous things in the channel that could kill you such as rocks, water mains, and electricity. Even if you avoid these deaths traps, there are other dangers you could face such as panic attacks, dehydration, and hypothermia. No one has ever survived a crossing of the channel. The channel is so big that even though someone has crossed it hundreds of times, they still find new places to explore around its edge.