Three local athletes are putting their fitness to the test and raising money for charity.

Brian Gildea, Dan Continenza and Megan DeMarco are completing the 4 by 4 by 48 challenge, running four miles every four hours for 48 hours, for a total of 48 miles over two days.

They're collecting donations, raising money for Brooklyne's Beacons, a pediatric cancer charity.

"I hope we can inspire people to do some things they didn't think were possible, we weren't really sure what to expect," said DeMarco. "We're all athletes and runners but doing 48 miles in two days with no sleep, we're just not really sure what to expect." 

You can run the final four miles with the trio on Sunday, March 19th at the PennWest Edinboro Track at 10 a.m.