Think running 26.2 miles is tough? Or biking 112 miles? How about swimming 2.4 miles?

Two New Yorkers did all three on the same day — five days in a row, each day in a different borough.

Chris Calimano and Chris Solarz completed an “Epic5 Challenge’’ which ended Friday night in Central Park. They’re the first people to perform the feat outside of Hawaii. Only 11 others finished one since 2010.

The distance covered on foot, on their bikes and in the water totaled 703 miles.

Emerging from Jamaica Bay Wednesday, Calimano said, “there were so many jellyfish it was like swimming in bubble tea.’’

Solarz said it was “an amazing way to witness the diversity of the city.”

What’s next for the two? Calimano wants the record for most pizza consumed. Solarz is hoping to travel to the most countries ever in 24-hours.