Brain damaged ex-boxer Michael Watson is hoping to finish the London Marathon on Saturday, six days after he set out.
Watson began his London Marathon attempt last Sunday
Watson, who is raising money for the Brain and Spine Foundation, will be accompanied on the final leg by Chris Eubank - the fighter who left him with the injuries that almost cost his life.
After collapsing in the 12th round of their 1991 title fight Watson spent 40 days in a coma and had six brain
During the marathon Watson, who is partially paralysed, has covered two miles every morning and afternoon.
Each mile takes him an hour to walk and he has been resting and sleeping in a support bus following him along the route.
Before setting out with 33,000 other competitors last Sunday, Watson received messages of support from Muhammad Ali and current WBC champion Lennox Lewis.
Former boxer Spencer Oliver, who also suffered brain damage, will join Watson and Eubank for the final mile.
During the challenge Watson said: "What I'm doing does drain me physically, but I'm so electrified by this experience.
"It gives me the drive within myself to finish this course, to get down The Mall
on Saturday at midday."
After the fight doctors predicted Watson would never walk again.
He spent years in a wheelchair and does not have full use of the left side of his body.
But Watson says he bears no malice towards Eubank, explaining: "I couldn't believe what had happened. But when I met him, I realised he was suffering too.
"He has carried a lot over the years. When I first met him I just felt that I could forgive him and all I felt was love."