A Sunderland lawyer has swapped paperwork for pounding the pavement to prepare for the Great North Run.
Iain Walker admits he would have struggled to run for a bus before signing up for the event.
But the 29-year-old has now clocked up more than 300 miles in training since April – running for 3,300 minutes, the equivalent of more than two days.
He is aiming to raise more than £1,000 for the MS Society – a charity that has provided support to his mother, Hilary, who has lived with multiple sclerosis for more than 15 years.
Ian, from Millfield, has been overwhelmed by pledges of donations from friends and family.
The former Monkwearmouth School pupil said: “I was pretty unfit and didn’t do much exercise at all, apart from the odd game of cricket.
“The idea of doing the Great North Run came from a group of friends – who are all fit – and who had signed up for the race in September.
“There were a few comments directed at me along the lines of how funny it would be if I was to do it with them. So I decided it would be fun to prove people wrong.
“My inspiration for actually doing it has come from my mam and to raise money for the MS Society, that’s what has kept me going on days when I haven’t fancied getting my trainers on for my latest jog.”
Retired teacher, Hilary, said: “I am very touched that Iain has done so much training for the run – it’s something I never thought he would do, but I think it’s great that he has.
“I am looking forward to cheering him on on the day.”
To sponsor Ian or make a donation visit justgiving.com/iain-walker5.