At around 4 am this morning DC Adam Scott and Sgt Ian Wilkinson set off from Bowness in Cumbria headed for Tynemouth on the famous coast to coast route.
They'll tackle the first and last stages on bicycles in between they will take on 53 miles of relentless running- all to be completed before the sun comes up on Sunday. It's all to raise thousands of pounds for the Over the Wall children's charity:
When we heard about Over the Wall and the fantastic work the charity does for seriously ill children in the north east, we wanted to do something a little bit challenging and special to help raise money and awareness for the charity.
The children we're doing this for have to face far greater challenges than this every day of their lives so I'm sure we can put up with a little pain and discomfort to bring them a week of fun and happiness, so we're going to give it our best shot.
Kevin Mathieson, Chief Executive of Over the Wall children's charity added:
The lads are doing a tremendously difficult challenge to enable more seriously ill children in the north east attend a life-changing Over the Wall camp.
I'm sure I speak for all the children and their families who will benefit from their efforts in not only wishing them every success and good luck but also thanking them for thinking of others less fortunate than themselves. It's a wonderfully kind gesture and I hope they complete it safe and well.
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