Inspired by ex-Navy Seal and ultrarunning guru David Goggins, the 4x4x48 challenge is one of the most gruelling running challenges in the world.

Peadar O'Reilly, Jon Raven and Tom Cropper have been training hard all year in order to complete the challenge which will see them cover 48 miles in 48 hours to raise vital funds for the RNLI.

So what is the 4x4x48 Challenge, exactly?

The 4x4x48 challenge involves running 4 miles, every 4 hours, for 48 hours.

That's 4 miles, 12 times. Over a 48 hour period.

48 miles in total!

In other words, we're well into ultramarathon territory.

We are doing this event to not only raise money but also awareness of the great work and lives saved by the RNLI. The training has been tough and the event no doubt tougher, so please get behind us and help this great cause.