Clive Cornish, who's 48, is taking on the epic feat to raise awareness for the less fortunate in society and says he is living proof that people can turn their lives around.
Over the past few weeks he's been wheeling the cross around Welsh countryside and completes the trek by returning to his hometown of Cardiff this weekend.
Speaking about the walk, he said "I came from a background of drink and drugs and have served six years in prison for committing robbery.
"I just want to show to people that no matter what hardship you are going through that you can overcome it.
"If I can do it then so can anyone."
As well as committing to using his life to spread the word of God, Mr Cornish - who attends New Life Church in Fairwater - said he now wants to support inmates at a nearby prison with weekly visits.
I know what it's like to be inside and have that feeling that no-one likes you and the world is against you," he added.
"It can be so easy for people to fall into a pattern of reoffending and breaking out of it can be difficult.
"We all have issues in life - the things which affected me from my past still do.
"But I want to show people that there is another path and a way out.
"It's all too easy to criticise people when you haven't walked in their footsteps. I think we need to be more compassionate towards people and if my walk can inspire a single person to change or be kinder to someone then that's an achievement."