I have written on here before about the tragic death of Gareth Crockett, who was killed in Anglessey last year whilst trying to raise £10,000 by cycling more than 500 miles  and running four marathons in eight days, culminating in the London Marathon. He was driven to raise funds in memory of a friend who had died, and died himself doing so, long before reaching London. Now his friends are planning to finish the journey that Gareth, 27, from County Down, began. Here his friend Jez Davison explains more.

The original Beldon Challenge was born after the death of our good friend John Erwin – A brilliant, fun loving and passionate cyclist from Northern Ireland who went to uni and worked in London. He was diagnosed with leukaemia in April 2010 and died three weeks later.

John was a big fan of cycling and so Gareth and I, with our mutual love of a gruelling physical challenge and wearing lycra at any opportunity, created the now infamous Beldon Challenge. The plan was for Gareth, Neil and I to cycle over 500 miles from Belfast to London in eight days, completing four marathons along the way (Belfast, Dublin, Bristol and London). We were attempting to raise a tonne of cash for the brilliant Leukaemia and Lymphoma Research charity. Tragically on day four of the challenge Gareth was killed by a motorist as we cycled through north Wales.

Gareth and John grew up together in Moira, near Belfast. They are both now buried there. So it seems fitting to complete it properly and finish what we initially started.  Jonny, Gareth’s younger brother, and I will pick it up from mid Wales on the 19th April, near where Gareth died, and finish with thee London marathon on 22nd April. Having raised almost £50,000 from last year’s challenge we are trying to raise even more in memory of both John and Gareth.

Please help us support the amazing Leukaemia and Lymphoma Research charity by donating at www.justgiving.com/2012Beldon and follow our painful lycra clad training on Twitter @jez_davison and @Crockers18

The 2012 Beldon itinerary:

Thursday 19th April – 125mile cycle from Welshpool to Bristol.

Friday 20th April – 26.2 mile marathon in Bristol.

Saturday 21st April – 125 mile cycle from Bristol to London

Sunday 22nd April – 26.2 mile Virgin London Marathon